Home / 1,589.74-2,191.68-1,191.98

Finding the Fourth Proportional to 1,589.74, 2,191.68 and 1,191.98

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Solution

The fourth proportional to 1,589.74, 2,191.68 and 1,191.98 is: 1,643.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.74 : 2,191.68 = 1,191.98 : x
  2. Step 2: Convert to fraction form
    1,589.74/2,191.68 = 1,191.98/x
  3. Step 3: Cross multiply
    1,589.74x = 2,191.68 × 1,191.98
  4. Step 4: Simplify right side
    1,589.74x = 2,612,438.73
  5. Step 5: Solve for x
    x = 2,612,438.73/1,589.74
  6. Step 6: Final answer
    x = 1,643.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.