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Finding the Fourth Proportional to 8,867.14, 13,288.14 and 4,920.12

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Solution

The fourth proportional to 8,867.14, 13,288.14 and 4,920.12 is: 7,373.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,867.14 : 13,288.14 = 4,920.12 : x
  2. Step 2: Convert to fraction form
    8,867.14/13,288.14 = 4,920.12/x
  3. Step 3: Cross multiply
    8,867.14x = 13,288.14 × 4,920.12
  4. Step 4: Simplify right side
    8,867.14x = 65,379,243.38
  5. Step 5: Solve for x
    x = 65,379,243.38/8,867.14
  6. Step 6: Final answer
    x = 7,373.21

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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.