Home / 1,508.79-2,252.91-1,331.62

Finding the Fourth Proportional to 1,508.79, 2,252.91 and 1,331.62

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Solution

The fourth proportional to 1,508.79, 2,252.91 and 1,331.62 is: 1,988.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.79 : 2,252.91 = 1,331.62 : x
  2. Step 2: Convert to fraction form
    1,508.79/2,252.91 = 1,331.62/x
  3. Step 3: Cross multiply
    1,508.79x = 2,252.91 × 1,331.62
  4. Step 4: Simplify right side
    1,508.79x = 3,000,008.75
  5. Step 5: Solve for x
    x = 3,000,008.75/1,508.79
  6. Step 6: Final answer
    x = 1,988.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.