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Finding the Fourth Proportional to 8,866.12, 12,231.81 and 5,087.92

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Solution

The fourth proportional to 8,866.12, 12,231.81 and 5,087.92 is: 7,019.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.12 : 12,231.81 = 5,087.92 : x
  2. Step 2: Convert to fraction form
    8,866.12/12,231.81 = 5,087.92/x
  3. Step 3: Cross multiply
    8,866.12x = 12,231.81 × 5,087.92
  4. Step 4: Simplify right side
    8,866.12x = 62,234,384.14
  5. Step 5: Solve for x
    x = 62,234,384.14/8,866.12
  6. Step 6: Final answer
    x = 7,019.35

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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.