Home / 3,856.97-5,317.65-3,148.09

Finding the Fourth Proportional to 3,856.97, 5,317.65 and 3,148.09

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Solution

The fourth proportional to 3,856.97, 5,317.65 and 3,148.09 is: 4,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.97 : 5,317.65 = 3,148.09 : x
  2. Step 2: Convert to fraction form
    3,856.97/5,317.65 = 3,148.09/x
  3. Step 3: Cross multiply
    3,856.97x = 5,317.65 × 3,148.09
  4. Step 4: Simplify right side
    3,856.97x = 16,740,427.49
  5. Step 5: Solve for x
    x = 16,740,427.49/3,856.97
  6. Step 6: Final answer
    x = 4,340.30

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Half scale
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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.