Home / 3,103.13-4,654.70-912.03

Finding the Fourth Proportional to 3,103.13, 4,654.70 and 912.03

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Solution

The fourth proportional to 3,103.13, 4,654.70 and 912.03 is: 1,368.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,103.13 : 4,654.70 = 912.03 : x
  2. Step 2: Convert to fraction form
    3,103.13/4,654.70 = 912.03/x
  3. Step 3: Cross multiply
    3,103.13x = 4,654.70 × 912.03
  4. Step 4: Simplify right side
    3,103.13x = 4,245,207.45
  5. Step 5: Solve for x
    x = 4,245,207.45/3,103.13
  6. Step 6: Final answer
    x = 1,368.04

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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.