Home / 3,189.07-4,781.65-1,108.18

Finding the Fourth Proportional to 3,189.07, 4,781.65 and 1,108.18

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Solution

The fourth proportional to 3,189.07, 4,781.65 and 1,108.18 is: 1,661.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.07 : 4,781.65 = 1,108.18 : x
  2. Step 2: Convert to fraction form
    3,189.07/4,781.65 = 1,108.18/x
  3. Step 3: Cross multiply
    3,189.07x = 4,781.65 × 1,108.18
  4. Step 4: Simplify right side
    3,189.07x = 5,298,928.90
  5. Step 5: Solve for x
    x = 5,298,928.90/3,189.07
  6. Step 6: Final answer
    x = 1,661.59

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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.