Home / 3,876.84-5,350.18-2,221.16

Finding the Fourth Proportional to 3,876.84, 5,350.18 and 2,221.16

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Solution

The fourth proportional to 3,876.84, 5,350.18 and 2,221.16 is: 3,065.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.84 : 5,350.18 = 2,221.16 : x
  2. Step 2: Convert to fraction form
    3,876.84/5,350.18 = 2,221.16/x
  3. Step 3: Cross multiply
    3,876.84x = 5,350.18 × 2,221.16
  4. Step 4: Simplify right side
    3,876.84x = 11,883,605.81
  5. Step 5: Solve for x
    x = 11,883,605.81/3,876.84
  6. Step 6: Final answer
    x = 3,065.28

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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.