Home / 8,989.29-13,490.01-3,145.95

Finding the Fourth Proportional to 8,989.29, 13,490.01 and 3,145.95

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Solution

The fourth proportional to 8,989.29, 13,490.01 and 3,145.95 is: 4,721.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.29 : 13,490.01 = 3,145.95 : x
  2. Step 2: Convert to fraction form
    8,989.29/13,490.01 = 3,145.95/x
  3. Step 3: Cross multiply
    8,989.29x = 13,490.01 × 3,145.95
  4. Step 4: Simplify right side
    8,989.29x = 42,438,813.78
  5. Step 5: Solve for x
    x = 42,438,813.78/8,989.29
  6. Step 6: Final answer
    x = 4,721.04

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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.