Home / 3,917.34-5,867.91-3,138.66

Finding the Fourth Proportional to 3,917.34, 5,867.91 and 3,138.66

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Solution

The fourth proportional to 3,917.34, 5,867.91 and 3,138.66 is: 4,701.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.34 : 5,867.91 = 3,138.66 : x
  2. Step 2: Convert to fraction form
    3,917.34/5,867.91 = 3,138.66/x
  3. Step 3: Cross multiply
    3,917.34x = 5,867.91 × 3,138.66
  4. Step 4: Simplify right side
    3,917.34x = 18,417,374.40
  5. Step 5: Solve for x
    x = 18,417,374.40/3,917.34
  6. Step 6: Final answer
    x = 4,701.50

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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.