Home / 8,211.31-11,337.06-6,319.55

Finding the Fourth Proportional to 8,211.31, 11,337.06 and 6,319.55

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Solution

The fourth proportional to 8,211.31, 11,337.06 and 6,319.55 is: 8,725.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.31 : 11,337.06 = 6,319.55 : x
  2. Step 2: Convert to fraction form
    8,211.31/11,337.06 = 6,319.55/x
  3. Step 3: Cross multiply
    8,211.31x = 11,337.06 × 6,319.55
  4. Step 4: Simplify right side
    8,211.31x = 71,645,169.56
  5. Step 5: Solve for x
    x = 71,645,169.56/8,211.31
  6. Step 6: Final answer
    x = 8,725.18

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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.