Home / 1,513.61-2,089.29-1,072.79

Finding the Fourth Proportional to 1,513.61, 2,089.29 and 1,072.79

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Solution

The fourth proportional to 1,513.61, 2,089.29 and 1,072.79 is: 1,480.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.61 : 2,089.29 = 1,072.79 : x
  2. Step 2: Convert to fraction form
    1,513.61/2,089.29 = 1,072.79/x
  3. Step 3: Cross multiply
    1,513.61x = 2,089.29 × 1,072.79
  4. Step 4: Simplify right side
    1,513.61x = 2,241,358.97
  5. Step 5: Solve for x
    x = 2,241,358.97/1,513.61
  6. Step 6: Final answer
    x = 1,480.81

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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.