Home / 8,965.60-12,371.76-5,239.84

Finding the Fourth Proportional to 8,965.60, 12,371.76 and 5,239.84

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Solution

The fourth proportional to 8,965.60, 12,371.76 and 5,239.84 is: 7,230.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.60 : 12,371.76 = 5,239.84 : x
  2. Step 2: Convert to fraction form
    8,965.60/12,371.76 = 5,239.84/x
  3. Step 3: Cross multiply
    8,965.60x = 12,371.76 × 5,239.84
  4. Step 4: Simplify right side
    8,965.60x = 64,826,042.92
  5. Step 5: Solve for x
    x = 64,826,042.92/8,965.60
  6. Step 6: Final answer
    x = 7,230.53

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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.