Home / 8,715.40-13,080.30-4,042.60

Finding the Fourth Proportional to 8,715.40, 13,080.30 and 4,042.60

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Solution

The fourth proportional to 8,715.40, 13,080.30 and 4,042.60 is: 6,067.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,715.40 : 13,080.30 = 4,042.60 : x
  2. Step 2: Convert to fraction form
    8,715.40/13,080.30 = 4,042.60/x
  3. Step 3: Cross multiply
    8,715.40x = 13,080.30 × 4,042.60
  4. Step 4: Simplify right side
    8,715.40x = 52,878,420.78
  5. Step 5: Solve for x
    x = 52,878,420.78/8,715.40
  6. Step 6: Final answer
    x = 6,067.24

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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.