Home / 5,426.09-8,139.20-1,728.30

Finding the Fourth Proportional to 5,426.09, 8,139.20 and 1,728.30

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Solution

The fourth proportional to 5,426.09, 8,139.20 and 1,728.30 is: 2,592.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.09 : 8,139.20 = 1,728.30 : x
  2. Step 2: Convert to fraction form
    5,426.09/8,139.20 = 1,728.30/x
  3. Step 3: Cross multiply
    5,426.09x = 8,139.20 × 1,728.30
  4. Step 4: Simplify right side
    5,426.09x = 14,066,979.36
  5. Step 5: Solve for x
    x = 14,066,979.36/5,426.09
  6. Step 6: Final answer
    x = 2,592.47

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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.