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Finding the Fourth Proportional to 9,915.20, 14,879.04 and 5,763.44

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Solution

The fourth proportional to 9,915.20, 14,879.04 and 5,763.44 is: 8,648.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.20 : 14,879.04 = 5,763.44 : x
  2. Step 2: Convert to fraction form
    9,915.20/14,879.04 = 5,763.44/x
  3. Step 3: Cross multiply
    9,915.20x = 14,879.04 × 5,763.44
  4. Step 4: Simplify right side
    9,915.20x = 85,754,454.30
  5. Step 5: Solve for x
    x = 85,754,454.30/9,915.20
  6. Step 6: Final answer
    x = 8,648.79

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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.