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Finding the Fourth Proportional to 4,767.66, 7,151.49 and 1,687.50

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Solution

The fourth proportional to 4,767.66, 7,151.49 and 1,687.50 is: 2,531.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,767.66 : 7,151.49 = 1,687.50 : x
  2. Step 2: Convert to fraction form
    4,767.66/7,151.49 = 1,687.50/x
  3. Step 3: Cross multiply
    4,767.66x = 7,151.49 × 1,687.50
  4. Step 4: Simplify right side
    4,767.66x = 12,068,139.38
  5. Step 5: Solve for x
    x = 12,068,139.38/4,767.66
  6. Step 6: Final answer
    x = 2,531.25

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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.