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Finding the Fourth Proportional to 6,389.01, 8,761.86 and 6,122.97

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Solution

The fourth proportional to 6,389.01, 8,761.86 and 6,122.97 is: 8,397.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.01 : 8,761.86 = 6,122.97 : x
  2. Step 2: Convert to fraction form
    6,389.01/8,761.86 = 6,122.97/x
  3. Step 3: Cross multiply
    6,389.01x = 8,761.86 × 6,122.97
  4. Step 4: Simplify right side
    6,389.01x = 53,648,605.92
  5. Step 5: Solve for x
    x = 53,648,605.92/6,389.01
  6. Step 6: Final answer
    x = 8,397.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.