Home / 9,387.20-12,953.12-5,195.20

Finding the Fourth Proportional to 9,387.20, 12,953.12 and 5,195.20

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Solution

The fourth proportional to 9,387.20, 12,953.12 and 5,195.20 is: 7,168.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,387.20 : 12,953.12 = 5,195.20 : x
  2. Step 2: Convert to fraction form
    9,387.20/12,953.12 = 5,195.20/x
  3. Step 3: Cross multiply
    9,387.20x = 12,953.12 × 5,195.20
  4. Step 4: Simplify right side
    9,387.20x = 67,294,049.02
  5. Step 5: Solve for x
    x = 67,294,049.02/9,387.20
  6. Step 6: Final answer
    x = 7,168.70

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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.