Home / 1,908.26-2,643.62-1,862.90

Finding the Fourth Proportional to 1,908.26, 2,643.62 and 1,862.90

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Solution

The fourth proportional to 1,908.26, 2,643.62 and 1,862.90 is: 2,580.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.26 : 2,643.62 = 1,862.90 : x
  2. Step 2: Convert to fraction form
    1,908.26/2,643.62 = 1,862.90/x
  3. Step 3: Cross multiply
    1,908.26x = 2,643.62 × 1,862.90
  4. Step 4: Simplify right side
    1,908.26x = 4,924,799.70
  5. Step 5: Solve for x
    x = 4,924,799.70/1,908.26
  6. Step 6: Final answer
    x = 2,580.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.