Home / 2,642.60-3,972.90-2,159.16

Finding the Fourth Proportional to 2,642.60, 3,972.90 and 2,159.16

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Solution

The fourth proportional to 2,642.60, 3,972.90 and 2,159.16 is: 3,246.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.60 : 3,972.90 = 2,159.16 : x
  2. Step 2: Convert to fraction form
    2,642.60/3,972.90 = 2,159.16/x
  3. Step 3: Cross multiply
    2,642.60x = 3,972.90 × 2,159.16
  4. Step 4: Simplify right side
    2,642.60x = 8,578,126.76
  5. Step 5: Solve for x
    x = 8,578,126.76/2,642.60
  6. Step 6: Final answer
    x = 3,246.09

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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.