Home / 2,166.20-3,248.90-705.36

Finding the Fourth Proportional to 2,166.20, 3,248.90 and 705.36

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Solution

The fourth proportional to 2,166.20, 3,248.90 and 705.36 is: 1,057.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166.20 : 3,248.90 = 705.36 : x
  2. Step 2: Convert to fraction form
    2,166.20/3,248.90 = 705.36/x
  3. Step 3: Cross multiply
    2,166.20x = 3,248.90 × 705.36
  4. Step 4: Simplify right side
    2,166.20x = 2,291,644.10
  5. Step 5: Solve for x
    x = 2,291,644.10/2,166.20
  6. Step 6: Final answer
    x = 1,057.91

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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.