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Finding the Fourth Proportional to 9,695.66, 13,380.34 and 5,447.47

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Solution

The fourth proportional to 9,695.66, 13,380.34 and 5,447.47 is: 7,517.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,695.66 : 13,380.34 = 5,447.47 : x
  2. Step 2: Convert to fraction form
    9,695.66/13,380.34 = 5,447.47/x
  3. Step 3: Cross multiply
    9,695.66x = 13,380.34 × 5,447.47
  4. Step 4: Simplify right side
    9,695.66x = 72,889,000.74
  5. Step 5: Solve for x
    x = 72,889,000.74/9,695.66
  6. Step 6: Final answer
    x = 7,517.69

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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.