Home / 3,129.08-4,318.14-1,712.76

Finding the Fourth Proportional to 3,129.08, 4,318.14 and 1,712.76

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Solution

The fourth proportional to 3,129.08, 4,318.14 and 1,712.76 is: 2,363.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.08 : 4,318.14 = 1,712.76 : x
  2. Step 2: Convert to fraction form
    3,129.08/4,318.14 = 1,712.76/x
  3. Step 3: Cross multiply
    3,129.08x = 4,318.14 × 1,712.76
  4. Step 4: Simplify right side
    3,129.08x = 7,395,937.47
  5. Step 5: Solve for x
    x = 7,395,937.47/3,129.08
  6. Step 6: Final answer
    x = 2,363.61

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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.