Home / 5,026.72-6,934.60-3,138.78

Finding the Fourth Proportional to 5,026.72, 6,934.60 and 3,138.78

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Solution

The fourth proportional to 5,026.72, 6,934.60 and 3,138.78 is: 4,330.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,026.72 : 6,934.60 = 3,138.78 : x
  2. Step 2: Convert to fraction form
    5,026.72/6,934.60 = 3,138.78/x
  3. Step 3: Cross multiply
    5,026.72x = 6,934.60 × 3,138.78
  4. Step 4: Simplify right side
    5,026.72x = 21,766,161.71
  5. Step 5: Solve for x
    x = 21,766,161.71/5,026.72
  6. Step 6: Final answer
    x = 4,330.09

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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.