Home / 3,886.60-5,363.46-2,118.18

Finding the Fourth Proportional to 3,886.60, 5,363.46 and 2,118.18

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Solution

The fourth proportional to 3,886.60, 5,363.46 and 2,118.18 is: 2,923.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.60 : 5,363.46 = 2,118.18 : x
  2. Step 2: Convert to fraction form
    3,886.60/5,363.46 = 2,118.18/x
  3. Step 3: Cross multiply
    3,886.60x = 5,363.46 × 2,118.18
  4. Step 4: Simplify right side
    3,886.60x = 11,360,773.70
  5. Step 5: Solve for x
    x = 11,360,773.70/3,886.60
  6. Step 6: Final answer
    x = 2,923.06

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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.