Home / 3,173.13-4,759.38-981.90

Finding the Fourth Proportional to 3,173.13, 4,759.38 and 981.90

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Solution

The fourth proportional to 3,173.13, 4,759.38 and 981.90 is: 1,472.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,173.13 : 4,759.38 = 981.90 : x
  2. Step 2: Convert to fraction form
    3,173.13/4,759.38 = 981.90/x
  3. Step 3: Cross multiply
    3,173.13x = 4,759.38 × 981.90
  4. Step 4: Simplify right side
    3,173.13x = 4,673,235.22
  5. Step 5: Solve for x
    x = 4,673,235.22/3,173.13
  6. Step 6: Final answer
    x = 1,472.75

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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.