Home / 8,985.20-12,396.12-5,447.12

Finding the Fourth Proportional to 8,985.20, 12,396.12 and 5,447.12

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Solution

The fourth proportional to 8,985.20, 12,396.12 and 5,447.12 is: 7,514.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.20 : 12,396.12 = 5,447.12 : x
  2. Step 2: Convert to fraction form
    8,985.20/12,396.12 = 5,447.12/x
  3. Step 3: Cross multiply
    8,985.20x = 12,396.12 × 5,447.12
  4. Step 4: Simplify right side
    8,985.20x = 67,523,153.17
  5. Step 5: Solve for x
    x = 67,523,153.17/8,985.20
  6. Step 6: Final answer
    x = 7,514.93

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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.