Home / 1,979.47-2,732.51-1,233.80

Finding the Fourth Proportional to 1,979.47, 2,732.51 and 1,233.80

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Solution

The fourth proportional to 1,979.47, 2,732.51 and 1,233.80 is: 1,703.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.47 : 2,732.51 = 1,233.80 : x
  2. Step 2: Convert to fraction form
    1,979.47/2,732.51 = 1,233.80/x
  3. Step 3: Cross multiply
    1,979.47x = 2,732.51 × 1,233.80
  4. Step 4: Simplify right side
    1,979.47x = 3,371,370.84
  5. Step 5: Solve for x
    x = 3,371,370.84/1,979.47
  6. Step 6: Final answer
    x = 1,703.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.