Home / 8,939.04-12,335.84-5,161.91

Finding the Fourth Proportional to 8,939.04, 12,335.84 and 5,161.91

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Solution

The fourth proportional to 8,939.04, 12,335.84 and 5,161.91 is: 7,123.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.04 : 12,335.84 = 5,161.91 : x
  2. Step 2: Convert to fraction form
    8,939.04/12,335.84 = 5,161.91/x
  3. Step 3: Cross multiply
    8,939.04x = 12,335.84 × 5,161.91
  4. Step 4: Simplify right side
    8,939.04x = 63,676,500.88
  5. Step 5: Solve for x
    x = 63,676,500.88/8,939.04
  6. Step 6: Final answer
    x = 7,123.42

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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.