Home / 3,886.92-5,354.91-2,705.94

Finding the Fourth Proportional to 3,886.92, 5,354.91 and 2,705.94

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Solution

The fourth proportional to 3,886.92, 5,354.91 and 2,705.94 is: 3,727.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.92 : 5,354.91 = 2,705.94 : x
  2. Step 2: Convert to fraction form
    3,886.92/5,354.91 = 2,705.94/x
  3. Step 3: Cross multiply
    3,886.92x = 5,354.91 × 2,705.94
  4. Step 4: Simplify right side
    3,886.92x = 14,490,065.17
  5. Step 5: Solve for x
    x = 14,490,065.17/3,886.92
  6. Step 6: Final answer
    x = 3,727.90

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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.