Home / 8,742.40-13,115.84-2,899.60

Finding the Fourth Proportional to 8,742.40, 13,115.84 and 2,899.60

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Solution

The fourth proportional to 8,742.40, 13,115.84 and 2,899.60 is: 4,350.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.40 : 13,115.84 = 2,899.60 : x
  2. Step 2: Convert to fraction form
    8,742.40/13,115.84 = 2,899.60/x
  3. Step 3: Cross multiply
    8,742.40x = 13,115.84 × 2,899.60
  4. Step 4: Simplify right side
    8,742.40x = 38,030,689.66
  5. Step 5: Solve for x
    x = 38,030,689.66/8,742.40
  6. Step 6: Final answer
    x = 4,350.14

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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.