Home / 1,979.39-2,972.12-1,610.66

Finding the Fourth Proportional to 1,979.39, 2,972.12 and 1,610.66

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Solution

The fourth proportional to 1,979.39, 2,972.12 and 1,610.66 is: 2,418.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.39 : 2,972.12 = 1,610.66 : x
  2. Step 2: Convert to fraction form
    1,979.39/2,972.12 = 1,610.66/x
  3. Step 3: Cross multiply
    1,979.39x = 2,972.12 × 1,610.66
  4. Step 4: Simplify right side
    1,979.39x = 4,787,051.89
  5. Step 5: Solve for x
    x = 4,787,051.89/1,979.39
  6. Step 6: Final answer
    x = 2,418.45

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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.