Home / 7,180.13-10,770.19-1,986

Finding the Fourth Proportional to 7,180.13, 10,770.19 and 1,986

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Solution

The fourth proportional to 7,180.13, 10,770.19 and 1,986 is: 2,979

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.13 : 10,770.19 = 1,986 : x
  2. Step 2: Convert to fraction form
    7,180.13/10,770.19 = 1,986/x
  3. Step 3: Cross multiply
    7,180.13x = 10,770.19 × 1,986
  4. Step 4: Simplify right side
    7,180.13x = 21,389,592.38
  5. Step 5: Solve for x
    x = 21,389,592.38/7,180.13
  6. Step 6: Final answer
    x = 2,979

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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.