Home / 3,009.89-4,149.78-2,505.71

Finding the Fourth Proportional to 3,009.89, 4,149.78 and 2,505.71

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Solution

The fourth proportional to 3,009.89, 4,149.78 and 2,505.71 is: 3,454.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,009.89 : 4,149.78 = 2,505.71 : x
  2. Step 2: Convert to fraction form
    3,009.89/4,149.78 = 2,505.71/x
  3. Step 3: Cross multiply
    3,009.89x = 4,149.78 × 2,505.71
  4. Step 4: Simplify right side
    3,009.89x = 10,398,145.24
  5. Step 5: Solve for x
    x = 10,398,145.24/3,009.89
  6. Step 6: Final answer
    x = 3,454.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.