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Finding the Fourth Proportional to 8,701.97, 12,989.93 and 7,651.04

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Solution

The fourth proportional to 8,701.97, 12,989.93 and 7,651.04 is: 11,421.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,701.97 : 12,989.93 = 7,651.04 : x
  2. Step 2: Convert to fraction form
    8,701.97/12,989.93 = 7,651.04/x
  3. Step 3: Cross multiply
    8,701.97x = 12,989.93 × 7,651.04
  4. Step 4: Simplify right side
    8,701.97x = 99,386,370.82
  5. Step 5: Solve for x
    x = 99,386,370.82/8,701.97
  6. Step 6: Final answer
    x = 11,421.14

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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.