Home / 3,130.20-4,319.26-1,732.76

Finding the Fourth Proportional to 3,130.20, 4,319.26 and 1,732.76

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Solution

The fourth proportional to 3,130.20, 4,319.26 and 1,732.76 is: 2,390.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.20 : 4,319.26 = 1,732.76 : x
  2. Step 2: Convert to fraction form
    3,130.20/4,319.26 = 1,732.76/x
  3. Step 3: Cross multiply
    3,130.20x = 4,319.26 × 1,732.76
  4. Step 4: Simplify right side
    3,130.20x = 7,484,240.96
  5. Step 5: Solve for x
    x = 7,484,240.96/3,130.20
  6. Step 6: Final answer
    x = 2,390.98

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Half scale
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Double scale
Find fourth proportional to 3,131.20, 4,320.64 and 1,733.76
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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.