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Finding the Fourth Proportional to 5,616.60, 7,747.88 and 4,287.99

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Solution

The fourth proportional to 5,616.60, 7,747.88 and 4,287.99 is: 5,915.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,616.60 : 7,747.88 = 4,287.99 : x
  2. Step 2: Convert to fraction form
    5,616.60/7,747.88 = 4,287.99/x
  3. Step 3: Cross multiply
    5,616.60x = 7,747.88 × 4,287.99
  4. Step 4: Simplify right side
    5,616.60x = 33,222,831.96
  5. Step 5: Solve for x
    x = 33,222,831.96/5,616.60
  6. Step 6: Final answer
    x = 5,915.11

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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.