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Finding the Fourth Proportional to 6,861.38, 9,470.86 and 4,377.38

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Solution

The fourth proportional to 6,861.38, 9,470.86 and 4,377.38 is: 6,042.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,861.38 : 9,470.86 = 4,377.38 : x
  2. Step 2: Convert to fraction form
    6,861.38/9,470.86 = 4,377.38/x
  3. Step 3: Cross multiply
    6,861.38x = 9,470.86 × 4,377.38
  4. Step 4: Simplify right side
    6,861.38x = 41,457,494.85
  5. Step 5: Solve for x
    x = 41,457,494.85/6,861.38
  6. Step 6: Final answer
    x = 6,042.16

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1.5x scale

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.