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Finding the Fourth Proportional to 6,724.66, 9,279.74 and 3,740.48

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Solution

The fourth proportional to 6,724.66, 9,279.74 and 3,740.48 is: 5,161.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,724.66 : 9,279.74 = 3,740.48 : x
  2. Step 2: Convert to fraction form
    6,724.66/9,279.74 = 3,740.48/x
  3. Step 3: Cross multiply
    6,724.66x = 9,279.74 × 3,740.48
  4. Step 4: Simplify right side
    6,724.66x = 34,710,714.43
  5. Step 5: Solve for x
    x = 34,710,714.43/6,724.66
  6. Step 6: Final answer
    x = 5,161.71

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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.