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Finding the Fourth Proportional to 2,166.76, 3,249.46 and 705.58

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Solution

The fourth proportional to 2,166.76, 3,249.46 and 705.58 is: 1,058.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.76 : 3,249.46 = 705.58 : x
  2. Step 2: Convert to fraction form
    2,166.76/3,249.46 = 705.58/x
  3. Step 3: Cross multiply
    2,166.76x = 3,249.46 × 705.58
  4. Step 4: Simplify right side
    2,166.76x = 2,292,753.99
  5. Step 5: Solve for x
    x = 2,292,753.99/2,166.76
  6. Step 6: Final answer
    x = 1,058.15

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1.5x scale

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.