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Finding the Fourth Proportional to 6,872.51, 9,484.07 and 3,888.29

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Solution

The fourth proportional to 6,872.51, 9,484.07 and 3,888.29 is: 5,365.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.51 : 9,484.07 = 3,888.29 : x
  2. Step 2: Convert to fraction form
    6,872.51/9,484.07 = 3,888.29/x
  3. Step 3: Cross multiply
    6,872.51x = 9,484.07 × 3,888.29
  4. Step 4: Simplify right side
    6,872.51x = 36,876,747.68
  5. Step 5: Solve for x
    x = 36,876,747.68/6,872.51
  6. Step 6: Final answer
    x = 5,365.83

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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.