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Finding the Fourth Proportional to 1,713.11, 2,363.85 and 1,005.12

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Solution

The fourth proportional to 1,713.11, 2,363.85 and 1,005.12 is: 1,386.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,713.11 : 2,363.85 = 1,005.12 : x
  2. Step 2: Convert to fraction form
    1,713.11/2,363.85 = 1,005.12/x
  3. Step 3: Cross multiply
    1,713.11x = 2,363.85 × 1,005.12
  4. Step 4: Simplify right side
    1,713.11x = 2,375,952.91
  5. Step 5: Solve for x
    x = 2,375,952.91/1,713.11
  6. Step 6: Final answer
    x = 1,386.93

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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.