Home / 8,721.98-13,078.11-2,877.02

Finding the Fourth Proportional to 8,721.98, 13,078.11 and 2,877.02

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Solution

The fourth proportional to 8,721.98, 13,078.11 and 2,877.02 is: 4,313.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.98 : 13,078.11 = 2,877.02 : x
  2. Step 2: Convert to fraction form
    8,721.98/13,078.11 = 2,877.02/x
  3. Step 3: Cross multiply
    8,721.98x = 13,078.11 × 2,877.02
  4. Step 4: Simplify right side
    8,721.98x = 37,625,984.03
  5. Step 5: Solve for x
    x = 37,625,984.03/8,721.98
  6. Step 6: Final answer
    x = 4,313.93

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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.