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Finding the Fourth Proportional to 8,371.80, 12,559.80 and 5,911.43

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Solution

The fourth proportional to 8,371.80, 12,559.80 and 5,911.43 is: 8,868.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,371.80 : 12,559.80 = 5,911.43 : x
  2. Step 2: Convert to fraction form
    8,371.80/12,559.80 = 5,911.43/x
  3. Step 3: Cross multiply
    8,371.80x = 12,559.80 × 5,911.43
  4. Step 4: Simplify right side
    8,371.80x = 74,246,315.72
  5. Step 5: Solve for x
    x = 74,246,315.72/8,371.80
  6. Step 6: Final answer
    x = 8,868.62

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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.