Home / 1,938.88-2,909.16-1,209.04

Finding the Fourth Proportional to 1,938.88, 2,909.16 and 1,209.04

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Solution

The fourth proportional to 1,938.88, 2,909.16 and 1,209.04 is: 1,814.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.88 : 2,909.16 = 1,209.04 : x
  2. Step 2: Convert to fraction form
    1,938.88/2,909.16 = 1,209.04/x
  3. Step 3: Cross multiply
    1,938.88x = 2,909.16 × 1,209.04
  4. Step 4: Simplify right side
    1,938.88x = 3,517,290.81
  5. Step 5: Solve for x
    x = 3,517,290.81/1,938.88
  6. Step 6: Final answer
    x = 1,814.08

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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.