Home / 9,321.55-12,871.52-6,191.71

Finding the Fourth Proportional to 9,321.55, 12,871.52 and 6,191.71

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Solution

The fourth proportional to 9,321.55, 12,871.52 and 6,191.71 is: 8,549.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.55 : 12,871.52 = 6,191.71 : x
  2. Step 2: Convert to fraction form
    9,321.55/12,871.52 = 6,191.71/x
  3. Step 3: Cross multiply
    9,321.55x = 12,871.52 × 6,191.71
  4. Step 4: Simplify right side
    9,321.55x = 79,696,719.10
  5. Step 5: Solve for x
    x = 79,696,719.10/9,321.55
  6. Step 6: Final answer
    x = 8,549.73

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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.