Home / 9,339.14-12,887.42-5,147.40

Finding the Fourth Proportional to 9,339.14, 12,887.42 and 5,147.40

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Solution

The fourth proportional to 9,339.14, 12,887.42 and 5,147.40 is: 7,103.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,339.14 : 12,887.42 = 5,147.40 : x
  2. Step 2: Convert to fraction form
    9,339.14/12,887.42 = 5,147.40/x
  3. Step 3: Cross multiply
    9,339.14x = 12,887.42 × 5,147.40
  4. Step 4: Simplify right side
    9,339.14x = 66,336,705.71
  5. Step 5: Solve for x
    x = 66,336,705.71/9,339.14
  6. Step 6: Final answer
    x = 7,103.09

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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.