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Finding the Fourth Proportional to 6,691.86, 9,235.13 and 4,039.45

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Solution

The fourth proportional to 6,691.86, 9,235.13 and 4,039.45 is: 5,574.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,691.86 : 9,235.13 = 4,039.45 : x
  2. Step 2: Convert to fraction form
    6,691.86/9,235.13 = 4,039.45/x
  3. Step 3: Cross multiply
    6,691.86x = 9,235.13 × 4,039.45
  4. Step 4: Simplify right side
    6,691.86x = 37,304,802.59
  5. Step 5: Solve for x
    x = 37,304,802.59/6,691.86
  6. Step 6: Final answer
    x = 5,574.65

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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.