Home / 8,742.20-13,107.22-4,515.21

Finding the Fourth Proportional to 8,742.20, 13,107.22 and 4,515.21

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Solution

The fourth proportional to 8,742.20, 13,107.22 and 4,515.21 is: 6,769.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.20 : 13,107.22 = 4,515.21 : x
  2. Step 2: Convert to fraction form
    8,742.20/13,107.22 = 4,515.21/x
  3. Step 3: Cross multiply
    8,742.20x = 13,107.22 × 4,515.21
  4. Step 4: Simplify right side
    8,742.20x = 59,181,839.53
  5. Step 5: Solve for x
    x = 59,181,839.53/8,742.20
  6. Step 6: Final answer
    x = 6,769.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.