Home / 3,918.90-5,876.98-1,839.88

Finding the Fourth Proportional to 3,918.90, 5,876.98 and 1,839.88

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Solution

The fourth proportional to 3,918.90, 5,876.98 and 1,839.88 is: 2,759.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.90 : 5,876.98 = 1,839.88 : x
  2. Step 2: Convert to fraction form
    3,918.90/5,876.98 = 1,839.88/x
  3. Step 3: Cross multiply
    3,918.90x = 5,876.98 × 1,839.88
  4. Step 4: Simplify right side
    3,918.90x = 10,812,937.96
  5. Step 5: Solve for x
    x = 10,812,937.96/3,918.90
  6. Step 6: Final answer
    x = 2,759.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.