Home / 3,145.50-4,340.97-1,748.34

Finding the Fourth Proportional to 3,145.50, 4,340.97 and 1,748.34

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Solution

The fourth proportional to 3,145.50, 4,340.97 and 1,748.34 is: 2,412.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.50 : 4,340.97 = 1,748.34 : x
  2. Step 2: Convert to fraction form
    3,145.50/4,340.97 = 1,748.34/x
  3. Step 3: Cross multiply
    3,145.50x = 4,340.97 × 1,748.34
  4. Step 4: Simplify right side
    3,145.50x = 7,589,491.49
  5. Step 5: Solve for x
    x = 7,589,491.49/3,145.50
  6. Step 6: Final answer
    x = 2,412.81

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.