Home / 6,514.65-8,990.46-3,861.90

Finding the Fourth Proportional to 6,514.65, 8,990.46 and 3,861.90

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Solution

The fourth proportional to 6,514.65, 8,990.46 and 3,861.90 is: 5,329.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,514.65 : 8,990.46 = 3,861.90 : x
  2. Step 2: Convert to fraction form
    6,514.65/8,990.46 = 3,861.90/x
  3. Step 3: Cross multiply
    6,514.65x = 8,990.46 × 3,861.90
  4. Step 4: Simplify right side
    6,514.65x = 34,720,257.47
  5. Step 5: Solve for x
    x = 34,720,257.47/6,514.65
  6. Step 6: Final answer
    x = 5,329.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.