Home / 9,339.46-12,887.85-5,147.71

Finding the Fourth Proportional to 9,339.46, 12,887.85 and 5,147.71

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Solution

The fourth proportional to 9,339.46, 12,887.85 and 5,147.71 is: 7,103.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,339.46 : 12,887.85 = 5,147.71 : x
  2. Step 2: Convert to fraction form
    9,339.46/12,887.85 = 5,147.71/x
  3. Step 3: Cross multiply
    9,339.46x = 12,887.85 × 5,147.71
  4. Step 4: Simplify right side
    9,339.46x = 66,342,914.32
  5. Step 5: Solve for x
    x = 66,342,914.32/9,339.46
  6. Step 6: Final answer
    x = 7,103.51

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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.