Home / 5,431.04-8,151.20-2,146.48

Finding the Fourth Proportional to 5,431.04, 8,151.20 and 2,146.48

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Solution

The fourth proportional to 5,431.04, 8,151.20 and 2,146.48 is: 3,221.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,431.04 : 8,151.20 = 2,146.48 : x
  2. Step 2: Convert to fraction form
    5,431.04/8,151.20 = 2,146.48/x
  3. Step 3: Cross multiply
    5,431.04x = 8,151.20 × 2,146.48
  4. Step 4: Simplify right side
    5,431.04x = 17,496,387.78
  5. Step 5: Solve for x
    x = 17,496,387.78/5,431.04
  6. Step 6: Final answer
    x = 3,221.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.