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Finding the Fourth Proportional to 8,471.98, 11,691.05 and 4,695.30

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Solution

The fourth proportional to 8,471.98, 11,691.05 and 4,695.30 is: 6,479.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,471.98 : 11,691.05 = 4,695.30 : x
  2. Step 2: Convert to fraction form
    8,471.98/11,691.05 = 4,695.30/x
  3. Step 3: Cross multiply
    8,471.98x = 11,691.05 × 4,695.30
  4. Step 4: Simplify right side
    8,471.98x = 54,892,987.07
  5. Step 5: Solve for x
    x = 54,892,987.07/8,471.98
  6. Step 6: Final answer
    x = 6,479.36

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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.