Home / 6,470.28-9,690.03-4,122.90

Finding the Fourth Proportional to 6,470.28, 9,690.03 and 4,122.90

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Solution

The fourth proportional to 6,470.28, 9,690.03 and 4,122.90 is: 6,174.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,470.28 : 9,690.03 = 4,122.90 : x
  2. Step 2: Convert to fraction form
    6,470.28/9,690.03 = 4,122.90/x
  3. Step 3: Cross multiply
    6,470.28x = 9,690.03 × 4,122.90
  4. Step 4: Simplify right side
    6,470.28x = 39,951,024.69
  5. Step 5: Solve for x
    x = 39,951,024.69/6,470.28
  6. Step 6: Final answer
    x = 6,174.54

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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.