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Finding the Fourth Proportional to 2,166.64, 3,250.48 and 705.79

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Solution

The fourth proportional to 2,166.64, 3,250.48 and 705.79 is: 1,058.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.64 : 3,250.48 = 705.79 : x
  2. Step 2: Convert to fraction form
    2,166.64/3,250.48 = 705.79/x
  3. Step 3: Cross multiply
    2,166.64x = 3,250.48 × 705.79
  4. Step 4: Simplify right side
    2,166.64x = 2,294,156.28
  5. Step 5: Solve for x
    x = 2,294,156.28/2,166.64
  6. Step 6: Final answer
    x = 1,058.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.