Home / 3,869.56-5,339.91-2,101.15

Finding the Fourth Proportional to 3,869.56, 5,339.91 and 2,101.15

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Solution

The fourth proportional to 3,869.56, 5,339.91 and 2,101.15 is: 2,899.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.56 : 5,339.91 = 2,101.15 : x
  2. Step 2: Convert to fraction form
    3,869.56/5,339.91 = 2,101.15/x
  3. Step 3: Cross multiply
    3,869.56x = 5,339.91 × 2,101.15
  4. Step 4: Simplify right side
    3,869.56x = 11,219,951.90
  5. Step 5: Solve for x
    x = 11,219,951.90/3,869.56
  6. Step 6: Final answer
    x = 2,899.54

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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.