Home / 8,981.15-13,438.91-5,285.12

Finding the Fourth Proportional to 8,981.15, 13,438.91 and 5,285.12

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Solution

The fourth proportional to 8,981.15, 13,438.91 and 5,285.12 is: 7,908.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.15 : 13,438.91 = 5,285.12 : x
  2. Step 2: Convert to fraction form
    8,981.15/13,438.91 = 5,285.12/x
  3. Step 3: Cross multiply
    8,981.15x = 13,438.91 × 5,285.12
  4. Step 4: Simplify right side
    8,981.15x = 71,026,198.04
  5. Step 5: Solve for x
    x = 71,026,198.04/8,981.15
  6. Step 6: Final answer
    x = 7,908.37

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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.