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Finding the Fourth Proportional to 9,339.66, 12,890.22 and 5,982.30

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Solution

The fourth proportional to 9,339.66, 12,890.22 and 5,982.30 is: 8,256.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,339.66 : 12,890.22 = 5,982.30 : x
  2. Step 2: Convert to fraction form
    9,339.66/12,890.22 = 5,982.30/x
  3. Step 3: Cross multiply
    9,339.66x = 12,890.22 × 5,982.30
  4. Step 4: Simplify right side
    9,339.66x = 77,113,163.11
  5. Step 5: Solve for x
    x = 77,113,163.11/9,339.66
  6. Step 6: Final answer
    x = 8,256.53

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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.