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Finding the Fourth Proportional to 9,373.22, 12,928.62 and 6,387.86

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Solution

The fourth proportional to 9,373.22, 12,928.62 and 6,387.86 is: 8,810.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,373.22 : 12,928.62 = 6,387.86 : x
  2. Step 2: Convert to fraction form
    9,373.22/12,928.62 = 6,387.86/x
  3. Step 3: Cross multiply
    9,373.22x = 12,928.62 × 6,387.86
  4. Step 4: Simplify right side
    9,373.22x = 82,586,214.55
  5. Step 5: Solve for x
    x = 82,586,214.55/9,373.22
  6. Step 6: Final answer
    x = 8,810.87

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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.