Home / 5,426.45-8,139.68-1,728.65

Finding the Fourth Proportional to 5,426.45, 8,139.68 and 1,728.65

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Solution

The fourth proportional to 5,426.45, 8,139.68 and 1,728.65 is: 2,592.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.45 : 8,139.68 = 1,728.65 : x
  2. Step 2: Convert to fraction form
    5,426.45/8,139.68 = 1,728.65/x
  3. Step 3: Cross multiply
    5,426.45x = 8,139.68 × 1,728.65
  4. Step 4: Simplify right side
    5,426.45x = 14,070,649.19
  5. Step 5: Solve for x
    x = 14,070,649.19/5,426.45
  6. Step 6: Final answer
    x = 2,592.98

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Similar ratio
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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.