Home / 1,589.12-2,191.56-1,065.86

Finding the Fourth Proportional to 1,589.12, 2,191.56 and 1,065.86

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Solution

The fourth proportional to 1,589.12, 2,191.56 and 1,065.86 is: 1,469.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,589.12 : 2,191.56 = 1,065.86 : x
  2. Step 2: Convert to fraction form
    1,589.12/2,191.56 = 1,065.86/x
  3. Step 3: Cross multiply
    1,589.12x = 2,191.56 × 1,065.86
  4. Step 4: Simplify right side
    1,589.12x = 2,335,896.14
  5. Step 5: Solve for x
    x = 2,335,896.14/1,589.12
  6. Step 6: Final answer
    x = 1,469.93

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1.5x scale

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.