Home / 9,318.78-12,861.72-6,126.48

Finding the Fourth Proportional to 9,318.78, 12,861.72 and 6,126.48

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Solution

The fourth proportional to 9,318.78, 12,861.72 and 6,126.48 is: 8,455.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.78 : 12,861.72 = 6,126.48 : x
  2. Step 2: Convert to fraction form
    9,318.78/12,861.72 = 6,126.48/x
  3. Step 3: Cross multiply
    9,318.78x = 12,861.72 × 6,126.48
  4. Step 4: Simplify right side
    9,318.78x = 78,797,070.35
  5. Step 5: Solve for x
    x = 78,797,070.35/9,318.78
  6. Step 6: Final answer
    x = 8,455.73

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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.