Home / 1,909.59-2,860.26-1,863.15

Finding the Fourth Proportional to 1,909.59, 2,860.26 and 1,863.15

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Solution

The fourth proportional to 1,909.59, 2,860.26 and 1,863.15 is: 2,790.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.59 : 2,860.26 = 1,863.15 : x
  2. Step 2: Convert to fraction form
    1,909.59/2,860.26 = 1,863.15/x
  3. Step 3: Cross multiply
    1,909.59x = 2,860.26 × 1,863.15
  4. Step 4: Simplify right side
    1,909.59x = 5,329,093.42
  5. Step 5: Solve for x
    x = 5,329,093.42/1,909.59
  6. Step 6: Final answer
    x = 2,790.70

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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.