Home / 8,919.40-13,387.32-4,540

Finding the Fourth Proportional to 8,919.40, 13,387.32 and 4,540

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Solution

The fourth proportional to 8,919.40, 13,387.32 and 4,540 is: 6,814.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.40 : 13,387.32 = 4,540 : x
  2. Step 2: Convert to fraction form
    8,919.40/13,387.32 = 4,540/x
  3. Step 3: Cross multiply
    8,919.40x = 13,387.32 × 4,540
  4. Step 4: Simplify right side
    8,919.40x = 60,778,432.80
  5. Step 5: Solve for x
    x = 60,778,432.80/8,919.40
  6. Step 6: Final answer
    x = 6,814.18

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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.