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Finding the Fourth Proportional to 8,986.99, 12,402.84 and 5,452.15

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Solution

The fourth proportional to 8,986.99, 12,402.84 and 5,452.15 is: 7,524.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.99 : 12,402.84 = 5,452.15 : x
  2. Step 2: Convert to fraction form
    8,986.99/12,402.84 = 5,452.15/x
  3. Step 3: Cross multiply
    8,986.99x = 12,402.84 × 5,452.15
  4. Step 4: Simplify right side
    8,986.99x = 67,622,144.11
  5. Step 5: Solve for x
    x = 67,622,144.11/8,986.99
  6. Step 6: Final answer
    x = 7,524.45

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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.