Home / 1,971.77-2,721.14-1,132.51

Finding the Fourth Proportional to 1,971.77, 2,721.14 and 1,132.51

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Solution

The fourth proportional to 1,971.77, 2,721.14 and 1,132.51 is: 1,562.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.77 : 2,721.14 = 1,132.51 : x
  2. Step 2: Convert to fraction form
    1,971.77/2,721.14 = 1,132.51/x
  3. Step 3: Cross multiply
    1,971.77x = 2,721.14 × 1,132.51
  4. Step 4: Simplify right side
    1,971.77x = 3,081,716.00
  5. Step 5: Solve for x
    x = 3,081,716.00/1,971.77
  6. Step 6: Final answer
    x = 1,562.92

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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.