Home / 2,159.26-3,238.88-1,187.26

Finding the Fourth Proportional to 2,159.26, 3,238.88 and 1,187.26

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Solution

The fourth proportional to 2,159.26, 3,238.88 and 1,187.26 is: 1,780.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.26 : 3,238.88 = 1,187.26 : x
  2. Step 2: Convert to fraction form
    2,159.26/3,238.88 = 1,187.26/x
  3. Step 3: Cross multiply
    2,159.26x = 3,238.88 × 1,187.26
  4. Step 4: Simplify right side
    2,159.26x = 3,845,392.67
  5. Step 5: Solve for x
    x = 3,845,392.67/2,159.26
  6. Step 6: Final answer
    x = 1,780.88

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1.5x scale

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.