Home / 3,281.12-4,531.18-2,806.28

Finding the Fourth Proportional to 3,281.12, 4,531.18 and 2,806.28

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Solution

The fourth proportional to 3,281.12, 4,531.18 and 2,806.28 is: 3,875.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.12 : 4,531.18 = 2,806.28 : x
  2. Step 2: Convert to fraction form
    3,281.12/4,531.18 = 2,806.28/x
  3. Step 3: Cross multiply
    3,281.12x = 4,531.18 × 2,806.28
  4. Step 4: Simplify right side
    3,281.12x = 12,715,759.81
  5. Step 5: Solve for x
    x = 12,715,759.81/3,281.12
  6. Step 6: Final answer
    x = 3,875.43

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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.