Home / 9,186.40-13,774.96-3,989.92

Finding the Fourth Proportional to 9,186.40, 13,774.96 and 3,989.92

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Solution

The fourth proportional to 9,186.40, 13,774.96 and 3,989.92 is: 5,982.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,186.40 : 13,774.96 = 3,989.92 : x
  2. Step 2: Convert to fraction form
    9,186.40/13,774.96 = 3,989.92/x
  3. Step 3: Cross multiply
    9,186.40x = 13,774.96 × 3,989.92
  4. Step 4: Simplify right side
    9,186.40x = 54,960,988.40
  5. Step 5: Solve for x
    x = 54,960,988.40/9,186.40
  6. Step 6: Final answer
    x = 5,982.86

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1.5x scale

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.