Home / 5,426.20-8,139.52-1,728.04

Finding the Fourth Proportional to 5,426.20, 8,139.52 and 1,728.04

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Solution

The fourth proportional to 5,426.20, 8,139.52 and 1,728.04 is: 2,592.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.20 : 8,139.52 = 1,728.04 : x
  2. Step 2: Convert to fraction form
    5,426.20/8,139.52 = 1,728.04/x
  3. Step 3: Cross multiply
    5,426.20x = 8,139.52 × 1,728.04
  4. Step 4: Simplify right side
    5,426.20x = 14,065,416.14
  5. Step 5: Solve for x
    x = 14,065,416.14/5,426.20
  6. Step 6: Final answer
    x = 2,592.13

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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.