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Finding the Fourth Proportional to 4,972.57, 7,458.88 and 1,687.99

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Solution

The fourth proportional to 4,972.57, 7,458.88 and 1,687.99 is: 2,531.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,972.57 : 7,458.88 = 1,687.99 : x
  2. Step 2: Convert to fraction form
    4,972.57/7,458.88 = 1,687.99/x
  3. Step 3: Cross multiply
    4,972.57x = 7,458.88 × 1,687.99
  4. Step 4: Simplify right side
    4,972.57x = 12,590,487.76
  5. Step 5: Solve for x
    x = 12,590,487.76/4,972.57
  6. Step 6: Final answer
    x = 2,531.99

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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.