Home / 8,389.20-11,572.53-5,201.42

Finding the Fourth Proportional to 8,389.20, 11,572.53 and 5,201.42

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Solution

The fourth proportional to 8,389.20, 11,572.53 and 5,201.42 is: 7,175.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.20 : 11,572.53 = 5,201.42 : x
  2. Step 2: Convert to fraction form
    8,389.20/11,572.53 = 5,201.42/x
  3. Step 3: Cross multiply
    8,389.20x = 11,572.53 × 5,201.42
  4. Step 4: Simplify right side
    8,389.20x = 60,193,548.20
  5. Step 5: Solve for x
    x = 60,193,548.20/8,389.20
  6. Step 6: Final answer
    x = 7,175.13

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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.