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Finding the Fourth Proportional to 6,865.43, 9,474.88 and 3,881.79

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Solution

The fourth proportional to 6,865.43, 9,474.88 and 3,881.79 is: 5,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,865.43 : 9,474.88 = 3,881.79 : x
  2. Step 2: Convert to fraction form
    6,865.43/9,474.88 = 3,881.79/x
  3. Step 3: Cross multiply
    6,865.43x = 9,474.88 × 3,881.79
  4. Step 4: Simplify right side
    6,865.43x = 36,779,484.73
  5. Step 5: Solve for x
    x = 36,779,484.73/6,865.43
  6. Step 6: Final answer
    x = 5,357.20

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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.