Home / 2,159.19-3,212.87-2,151.90

Finding the Fourth Proportional to 2,159.19, 3,212.87 and 2,151.90

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Solution

The fourth proportional to 2,159.19, 3,212.87 and 2,151.90 is: 3,202.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.19 : 3,212.87 = 2,151.90 : x
  2. Step 2: Convert to fraction form
    2,159.19/3,212.87 = 2,151.90/x
  3. Step 3: Cross multiply
    2,159.19x = 3,212.87 × 2,151.90
  4. Step 4: Simplify right side
    2,159.19x = 6,913,764.19
  5. Step 5: Solve for x
    x = 6,913,764.19/2,159.19
  6. Step 6: Final answer
    x = 3,202.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.