Home / 2,160.35-3,240.50-699.47

Finding the Fourth Proportional to 2,160.35, 3,240.50 and 699.47

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Solution

The fourth proportional to 2,160.35, 3,240.50 and 699.47 is: 1,049.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.35 : 3,240.50 = 699.47 : x
  2. Step 2: Convert to fraction form
    2,160.35/3,240.50 = 699.47/x
  3. Step 3: Cross multiply
    2,160.35x = 3,240.50 × 699.47
  4. Step 4: Simplify right side
    2,160.35x = 2,266,612.84
  5. Step 5: Solve for x
    x = 2,266,612.84/2,160.35
  6. Step 6: Final answer
    x = 1,049.19

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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.