Home / 2,318.47-3,478.23-1,331.74

Finding the Fourth Proportional to 2,318.47, 3,478.23 and 1,331.74

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Solution

The fourth proportional to 2,318.47, 3,478.23 and 1,331.74 is: 1,997.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.47 : 3,478.23 = 1,331.74 : x
  2. Step 2: Convert to fraction form
    2,318.47/3,478.23 = 1,331.74/x
  3. Step 3: Cross multiply
    2,318.47x = 3,478.23 × 1,331.74
  4. Step 4: Simplify right side
    2,318.47x = 4,632,098.02
  5. Step 5: Solve for x
    x = 4,632,098.02/2,318.47
  6. Step 6: Final answer
    x = 1,997.91

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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.