Home / 3,104.78-4,657.13-913.43

Finding the Fourth Proportional to 3,104.78, 4,657.13 and 913.43

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Solution

The fourth proportional to 3,104.78, 4,657.13 and 913.43 is: 1,370.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,104.78 : 4,657.13 = 913.43 : x
  2. Step 2: Convert to fraction form
    3,104.78/4,657.13 = 913.43/x
  3. Step 3: Cross multiply
    3,104.78x = 4,657.13 × 913.43
  4. Step 4: Simplify right side
    3,104.78x = 4,253,934.40
  5. Step 5: Solve for x
    x = 4,253,934.40/3,104.78
  6. Step 6: Final answer
    x = 1,370.13

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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.