Home / 7,180.28-10,770.42-1,986.02

Finding the Fourth Proportional to 7,180.28, 10,770.42 and 1,986.02

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Solution

The fourth proportional to 7,180.28, 10,770.42 and 1,986.02 is: 2,979.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.28 : 10,770.42 = 1,986.02 : x
  2. Step 2: Convert to fraction form
    7,180.28/10,770.42 = 1,986.02/x
  3. Step 3: Cross multiply
    7,180.28x = 10,770.42 × 1,986.02
  4. Step 4: Simplify right side
    7,180.28x = 21,390,269.53
  5. Step 5: Solve for x
    x = 21,390,269.53/7,180.28
  6. Step 6: Final answer
    x = 2,979.03

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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.