Home / 8,944.20-12,339-5,405.31

Finding the Fourth Proportional to 8,944.20, 12,339 and 5,405.31

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Solution

The fourth proportional to 8,944.20, 12,339 and 5,405.31 is: 7,456.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,944.20 : 12,339 = 5,405.31 : x
  2. Step 2: Convert to fraction form
    8,944.20/12,339 = 5,405.31/x
  3. Step 3: Cross multiply
    8,944.20x = 12,339 × 5,405.31
  4. Step 4: Simplify right side
    8,944.20x = 66,696,120.09
  5. Step 5: Solve for x
    x = 66,696,120.09/8,944.20
  6. Step 6: Final answer
    x = 7,456.91

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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.