Home / 8,985.28-12,399.24-5,006.80

Finding the Fourth Proportional to 8,985.28, 12,399.24 and 5,006.80

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Solution

The fourth proportional to 8,985.28, 12,399.24 and 5,006.80 is: 6,909.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.28 : 12,399.24 = 5,006.80 : x
  2. Step 2: Convert to fraction form
    8,985.28/12,399.24 = 5,006.80/x
  3. Step 3: Cross multiply
    8,985.28x = 12,399.24 × 5,006.80
  4. Step 4: Simplify right side
    8,985.28x = 62,080,514.83
  5. Step 5: Solve for x
    x = 62,080,514.83/8,985.28
  6. Step 6: Final answer
    x = 6,909.14

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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.