Home / 2,132.51-2,943.29-1,387.11

Finding the Fourth Proportional to 2,132.51, 2,943.29 and 1,387.11

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Solution

The fourth proportional to 2,132.51, 2,943.29 and 1,387.11 is: 1,914.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.51 : 2,943.29 = 1,387.11 : x
  2. Step 2: Convert to fraction form
    2,132.51/2,943.29 = 1,387.11/x
  3. Step 3: Cross multiply
    2,132.51x = 2,943.29 × 1,387.11
  4. Step 4: Simplify right side
    2,132.51x = 4,082,660.06
  5. Step 5: Solve for x
    x = 4,082,660.06/2,132.51
  6. Step 6: Final answer
    x = 1,914.49

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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.