Home / 8,981.11-12,394.43-5,397.17

Finding the Fourth Proportional to 8,981.11, 12,394.43 and 5,397.17

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Solution

The fourth proportional to 8,981.11, 12,394.43 and 5,397.17 is: 7,448.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.11 : 12,394.43 = 5,397.17 : x
  2. Step 2: Convert to fraction form
    8,981.11/12,394.43 = 5,397.17/x
  3. Step 3: Cross multiply
    8,981.11x = 12,394.43 × 5,397.17
  4. Step 4: Simplify right side
    8,981.11x = 66,894,845.76
  5. Step 5: Solve for x
    x = 66,894,845.76/8,981.11
  6. Step 6: Final answer
    x = 7,448.39

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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.