Home / 1,979.51-2,971.08-1,250.51

Finding the Fourth Proportional to 1,979.51, 2,971.08 and 1,250.51

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Solution

The fourth proportional to 1,979.51, 2,971.08 and 1,250.51 is: 1,876.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.51 : 2,971.08 = 1,250.51 : x
  2. Step 2: Convert to fraction form
    1,979.51/2,971.08 = 1,250.51/x
  3. Step 3: Cross multiply
    1,979.51x = 2,971.08 × 1,250.51
  4. Step 4: Simplify right side
    1,979.51x = 3,715,350.40
  5. Step 5: Solve for x
    x = 3,715,350.40/1,979.51
  6. Step 6: Final answer
    x = 1,876.91

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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.