Home / 5,118.13-7,677.60-2,928.70

Finding the Fourth Proportional to 5,118.13, 7,677.60 and 2,928.70

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Solution

The fourth proportional to 5,118.13, 7,677.60 and 2,928.70 is: 4,393.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.13 : 7,677.60 = 2,928.70 : x
  2. Step 2: Convert to fraction form
    5,118.13/7,677.60 = 2,928.70/x
  3. Step 3: Cross multiply
    5,118.13x = 7,677.60 × 2,928.70
  4. Step 4: Simplify right side
    5,118.13x = 22,485,387.12
  5. Step 5: Solve for x
    x = 22,485,387.12/5,118.13
  6. Step 6: Final answer
    x = 4,393.28

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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.