Home / 2,160.09-3,240.18-699.30

Finding the Fourth Proportional to 2,160.09, 3,240.18 and 699.30

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Solution

The fourth proportional to 2,160.09, 3,240.18 and 699.30 is: 1,048.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.09 : 3,240.18 = 699.30 : x
  2. Step 2: Convert to fraction form
    2,160.09/3,240.18 = 699.30/x
  3. Step 3: Cross multiply
    2,160.09x = 3,240.18 × 699.30
  4. Step 4: Simplify right side
    2,160.09x = 2,265,857.87
  5. Step 5: Solve for x
    x = 2,265,857.87/2,160.09
  6. Step 6: Final answer
    x = 1,048.96

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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.