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Finding the Fourth Proportional to 5,414.50, 8,079.85 and 4,831.30

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Solution

The fourth proportional to 5,414.50, 8,079.85 and 4,831.30 is: 7,209.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.50 : 8,079.85 = 4,831.30 : x
  2. Step 2: Convert to fraction form
    5,414.50/8,079.85 = 4,831.30/x
  3. Step 3: Cross multiply
    5,414.50x = 8,079.85 × 4,831.30
  4. Step 4: Simplify right side
    5,414.50x = 39,036,179.31
  5. Step 5: Solve for x
    x = 39,036,179.31/5,414.50
  6. Step 6: Final answer
    x = 7,209.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.