Home / 2,166.12-3,249.45-705.78

Finding the Fourth Proportional to 2,166.12, 3,249.45 and 705.78

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Solution

The fourth proportional to 2,166.12, 3,249.45 and 705.78 is: 1,058.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.12 : 3,249.45 = 705.78 : x
  2. Step 2: Convert to fraction form
    2,166.12/3,249.45 = 705.78/x
  3. Step 3: Cross multiply
    2,166.12x = 3,249.45 × 705.78
  4. Step 4: Simplify right side
    2,166.12x = 2,293,396.82
  5. Step 5: Solve for x
    x = 2,293,396.82/2,166.12
  6. Step 6: Final answer
    x = 1,058.76

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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.