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Finding the Fourth Proportional to 5,599.66, 7,728.90 and 3,711.34

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Solution

The fourth proportional to 5,599.66, 7,728.90 and 3,711.34 is: 5,122.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,599.66 : 7,728.90 = 3,711.34 : x
  2. Step 2: Convert to fraction form
    5,599.66/7,728.90 = 3,711.34/x
  3. Step 3: Cross multiply
    5,599.66x = 7,728.90 × 3,711.34
  4. Step 4: Simplify right side
    5,599.66x = 28,684,575.73
  5. Step 5: Solve for x
    x = 28,684,575.73/5,599.66
  6. Step 6: Final answer
    x = 5,122.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.