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Finding the Fourth Proportional to 8,813.13, 12,163.19 and 5,087.13

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Solution

The fourth proportional to 8,813.13, 12,163.19 and 5,087.13 is: 7,020.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.13 : 12,163.19 = 5,087.13 : x
  2. Step 2: Convert to fraction form
    8,813.13/12,163.19 = 5,087.13/x
  3. Step 3: Cross multiply
    8,813.13x = 12,163.19 × 5,087.13
  4. Step 4: Simplify right side
    8,813.13x = 61,875,728.74
  5. Step 5: Solve for x
    x = 61,875,728.74/8,813.13
  6. Step 6: Final answer
    x = 7,020.86

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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.