Home / 5,490.10-8,235.15-5,122.90

Finding the Fourth Proportional to 5,490.10, 8,235.15 and 5,122.90

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Solution

The fourth proportional to 5,490.10, 8,235.15 and 5,122.90 is: 7,684.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,490.10 : 8,235.15 = 5,122.90 : x
  2. Step 2: Convert to fraction form
    5,490.10/8,235.15 = 5,122.90/x
  3. Step 3: Cross multiply
    5,490.10x = 8,235.15 × 5,122.90
  4. Step 4: Simplify right side
    5,490.10x = 42,187,849.94
  5. Step 5: Solve for x
    x = 42,187,849.94/5,490.10
  6. Step 6: Final answer
    x = 7,684.35

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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.