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Finding the Fourth Proportional to 5,490.78, 8,244.39 and 4,752.68

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Solution

The fourth proportional to 5,490.78, 8,244.39 and 4,752.68 is: 7,136.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.78 : 8,244.39 = 4,752.68 : x
  2. Step 2: Convert to fraction form
    5,490.78/8,244.39 = 4,752.68/x
  3. Step 3: Cross multiply
    5,490.78x = 8,244.39 × 4,752.68
  4. Step 4: Simplify right side
    5,490.78x = 39,182,906.24
  5. Step 5: Solve for x
    x = 39,182,906.24/5,490.78
  6. Step 6: Final answer
    x = 7,136.13

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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.