Home / 1,513.19-2,087.97-849.92

Finding the Fourth Proportional to 1,513.19, 2,087.97 and 849.92

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Solution

The fourth proportional to 1,513.19, 2,087.97 and 849.92 is: 1,172.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.19 : 2,087.97 = 849.92 : x
  2. Step 2: Convert to fraction form
    1,513.19/2,087.97 = 849.92/x
  3. Step 3: Cross multiply
    1,513.19x = 2,087.97 × 849.92
  4. Step 4: Simplify right side
    1,513.19x = 1,774,598.62
  5. Step 5: Solve for x
    x = 1,774,598.62/1,513.19
  6. Step 6: Final answer
    x = 1,172.75

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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.