Home / 3,430.76-5,143.38-3,157.36

Finding the Fourth Proportional to 3,430.76, 5,143.38 and 3,157.36

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Solution

The fourth proportional to 3,430.76, 5,143.38 and 3,157.36 is: 4,733.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.76 : 5,143.38 = 3,157.36 : x
  2. Step 2: Convert to fraction form
    3,430.76/5,143.38 = 3,157.36/x
  3. Step 3: Cross multiply
    3,430.76x = 5,143.38 × 3,157.36
  4. Step 4: Simplify right side
    3,430.76x = 16,239,502.28
  5. Step 5: Solve for x
    x = 16,239,502.28/3,430.76
  6. Step 6: Final answer
    x = 4,733.50

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Find fourth proportional to 1,715.38, 2,571.69 and 1,578.68
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.