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Finding the Fourth Proportional to 6,781.08, 9,357.62 and 3,948.53

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Solution

The fourth proportional to 6,781.08, 9,357.62 and 3,948.53 is: 5,448.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.08 : 9,357.62 = 3,948.53 : x
  2. Step 2: Convert to fraction form
    6,781.08/9,357.62 = 3,948.53/x
  3. Step 3: Cross multiply
    6,781.08x = 9,357.62 × 3,948.53
  4. Step 4: Simplify right side
    6,781.08x = 36,948,776.77
  5. Step 5: Solve for x
    x = 36,948,776.77/6,781.08
  6. Step 6: Final answer
    x = 5,448.80

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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.