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Finding the Fourth Proportional to 2,363.88, 3,261.70 and 1,315.88

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Solution

The fourth proportional to 2,363.88, 3,261.70 and 1,315.88 is: 1,815.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,363.88 : 3,261.70 = 1,315.88 : x
  2. Step 2: Convert to fraction form
    2,363.88/3,261.70 = 1,315.88/x
  3. Step 3: Cross multiply
    2,363.88x = 3,261.70 × 1,315.88
  4. Step 4: Simplify right side
    2,363.88x = 4,292,005.80
  5. Step 5: Solve for x
    x = 4,292,005.80/2,363.88
  6. Step 6: Final answer
    x = 1,815.66

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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.