Home / 8,742.20-12,064.29-5,205.56

Finding the Fourth Proportional to 8,742.20, 12,064.29 and 5,205.56

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Solution

The fourth proportional to 8,742.20, 12,064.29 and 5,205.56 is: 7,183.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.20 : 12,064.29 = 5,205.56 : x
  2. Step 2: Convert to fraction form
    8,742.20/12,064.29 = 5,205.56/x
  3. Step 3: Cross multiply
    8,742.20x = 12,064.29 × 5,205.56
  4. Step 4: Simplify right side
    8,742.20x = 62,801,385.45
  5. Step 5: Solve for x
    x = 62,801,385.45/8,742.20
  6. Step 6: Final answer
    x = 7,183.70

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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.