Home / 2,159.10-3,233.79-1,291.60

Finding the Fourth Proportional to 2,159.10, 3,233.79 and 1,291.60

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Solution

The fourth proportional to 2,159.10, 3,233.79 and 1,291.60 is: 1,934.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.10 : 3,233.79 = 1,291.60 : x
  2. Step 2: Convert to fraction form
    2,159.10/3,233.79 = 1,291.60/x
  3. Step 3: Cross multiply
    2,159.10x = 3,233.79 × 1,291.60
  4. Step 4: Simplify right side
    2,159.10x = 4,176,763.16
  5. Step 5: Solve for x
    x = 4,176,763.16/2,159.10
  6. Step 6: Final answer
    x = 1,934.49

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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.