Home / 3,336.78-5,003.28-1,387.92

Finding the Fourth Proportional to 3,336.78, 5,003.28 and 1,387.92

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Solution

The fourth proportional to 3,336.78, 5,003.28 and 1,387.92 is: 2,081.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,336.78 : 5,003.28 = 1,387.92 : x
  2. Step 2: Convert to fraction form
    3,336.78/5,003.28 = 1,387.92/x
  3. Step 3: Cross multiply
    3,336.78x = 5,003.28 × 1,387.92
  4. Step 4: Simplify right side
    3,336.78x = 6,944,152.38
  5. Step 5: Solve for x
    x = 6,944,152.38/3,336.78
  6. Step 6: Final answer
    x = 2,081.09

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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.