Home / 3,039.78-4,195.95-1,781.25

Finding the Fourth Proportional to 3,039.78, 4,195.95 and 1,781.25

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Solution

The fourth proportional to 3,039.78, 4,195.95 and 1,781.25 is: 2,458.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,039.78 : 4,195.95 = 1,781.25 : x
  2. Step 2: Convert to fraction form
    3,039.78/4,195.95 = 1,781.25/x
  3. Step 3: Cross multiply
    3,039.78x = 4,195.95 × 1,781.25
  4. Step 4: Simplify right side
    3,039.78x = 7,474,035.94
  5. Step 5: Solve for x
    x = 7,474,035.94/3,039.78
  6. Step 6: Final answer
    x = 2,458.74

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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.