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Finding the Fourth Proportional to 9,118.01, 12,570.67 and 6,839.67

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Solution

The fourth proportional to 9,118.01, 12,570.67 and 6,839.67 is: 9,429.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.01 : 12,570.67 = 6,839.67 : x
  2. Step 2: Convert to fraction form
    9,118.01/12,570.67 = 6,839.67/x
  3. Step 3: Cross multiply
    9,118.01x = 12,570.67 × 6,839.67
  4. Step 4: Simplify right side
    9,118.01x = 85,979,234.48
  5. Step 5: Solve for x
    x = 85,979,234.48/9,118.01
  6. Step 6: Final answer
    x = 9,429.61

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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.