Home / 8,985.12-12,398.68-5,007.16

Finding the Fourth Proportional to 8,985.12, 12,398.68 and 5,007.16

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Solution

The fourth proportional to 8,985.12, 12,398.68 and 5,007.16 is: 6,909.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.12 : 12,398.68 = 5,007.16 : x
  2. Step 2: Convert to fraction form
    8,985.12/12,398.68 = 5,007.16/x
  3. Step 3: Cross multiply
    8,985.12x = 12,398.68 × 5,007.16
  4. Step 4: Simplify right side
    8,985.12x = 62,082,174.55
  5. Step 5: Solve for x
    x = 62,082,174.55/8,985.12
  6. Step 6: Final answer
    x = 6,909.44

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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.