Home / 9,186.87-13,780.31-2,947.53

Finding the Fourth Proportional to 9,186.87, 13,780.31 and 2,947.53

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Solution

The fourth proportional to 9,186.87, 13,780.31 and 2,947.53 is: 4,421.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,186.87 : 13,780.31 = 2,947.53 : x
  2. Step 2: Convert to fraction form
    9,186.87/13,780.31 = 2,947.53/x
  3. Step 3: Cross multiply
    9,186.87x = 13,780.31 × 2,947.53
  4. Step 4: Simplify right side
    9,186.87x = 40,617,862.40
  5. Step 5: Solve for x
    x = 40,617,862.40/9,186.87
  6. Step 6: Final answer
    x = 4,421.30

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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.