Home / 8,390.20-11,578.17-5,031.02

Finding the Fourth Proportional to 8,390.20, 11,578.17 and 5,031.02

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Solution

The fourth proportional to 8,390.20, 11,578.17 and 5,031.02 is: 6,942.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.20 : 11,578.17 = 5,031.02 : x
  2. Step 2: Convert to fraction form
    8,390.20/11,578.17 = 5,031.02/x
  3. Step 3: Cross multiply
    8,390.20x = 11,578.17 × 5,031.02
  4. Step 4: Simplify right side
    8,390.20x = 58,250,004.83
  5. Step 5: Solve for x
    x = 58,250,004.83/8,390.20
  6. Step 6: Final answer
    x = 6,942.63

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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.