Home / 3,870.28-5,341-2,101.89

Finding the Fourth Proportional to 3,870.28, 5,341 and 2,101.89

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Solution

The fourth proportional to 3,870.28, 5,341 and 2,101.89 is: 2,900.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.28 : 5,341 = 2,101.89 : x
  2. Step 2: Convert to fraction form
    3,870.28/5,341 = 2,101.89/x
  3. Step 3: Cross multiply
    3,870.28x = 5,341 × 2,101.89
  4. Step 4: Simplify right side
    3,870.28x = 11,226,194.49
  5. Step 5: Solve for x
    x = 11,226,194.49/3,870.28
  6. Step 6: Final answer
    x = 2,900.62

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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.