Home / 8,720.30-13,080.39-2,877.38

Finding the Fourth Proportional to 8,720.30, 13,080.39 and 2,877.38

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Solution

The fourth proportional to 8,720.30, 13,080.39 and 2,877.38 is: 4,316.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.30 : 13,080.39 = 2,877.38 : x
  2. Step 2: Convert to fraction form
    8,720.30/13,080.39 = 2,877.38/x
  3. Step 3: Cross multiply
    8,720.30x = 13,080.39 × 2,877.38
  4. Step 4: Simplify right side
    8,720.30x = 37,637,252.58
  5. Step 5: Solve for x
    x = 37,637,252.58/8,720.30
  6. Step 6: Final answer
    x = 4,316.05

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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.