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Finding the Fourth Proportional to 9,695.88, 14,543.64 and 3,121.92

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Solution

The fourth proportional to 9,695.88, 14,543.64 and 3,121.92 is: 4,682.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,695.88 : 14,543.64 = 3,121.92 : x
  2. Step 2: Convert to fraction form
    9,695.88/14,543.64 = 3,121.92/x
  3. Step 3: Cross multiply
    9,695.88x = 14,543.64 × 3,121.92
  4. Step 4: Simplify right side
    9,695.88x = 45,404,080.59
  5. Step 5: Solve for x
    x = 45,404,080.59/9,695.88
  6. Step 6: Final answer
    x = 4,682.82

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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.