Home / 1,412.80-2,119.60-591.44

Finding the Fourth Proportional to 1,412.80, 2,119.60 and 591.44

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Solution

The fourth proportional to 1,412.80, 2,119.60 and 591.44 is: 887.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412.80 : 2,119.60 = 591.44 : x
  2. Step 2: Convert to fraction form
    1,412.80/2,119.60 = 591.44/x
  3. Step 3: Cross multiply
    1,412.80x = 2,119.60 × 591.44
  4. Step 4: Simplify right side
    1,412.80x = 1,253,616.22
  5. Step 5: Solve for x
    x = 1,253,616.22/1,412.80
  6. Step 6: Final answer
    x = 887.33

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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.