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Finding the Fourth Proportional to 6,761.17, 9,378.15 and 6,581.35

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Solution

The fourth proportional to 6,761.17, 9,378.15 and 6,581.35 is: 9,128.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,761.17 : 9,378.15 = 6,581.35 : x
  2. Step 2: Convert to fraction form
    6,761.17/9,378.15 = 6,581.35/x
  3. Step 3: Cross multiply
    6,761.17x = 9,378.15 × 6,581.35
  4. Step 4: Simplify right side
    6,761.17x = 61,720,887.50
  5. Step 5: Solve for x
    x = 61,720,887.50/6,761.17
  6. Step 6: Final answer
    x = 9,128.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.