Home / 2,160.15-3,240.23-699.27

Finding the Fourth Proportional to 2,160.15, 3,240.23 and 699.27

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Solution

The fourth proportional to 2,160.15, 3,240.23 and 699.27 is: 1,048.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.15 : 3,240.23 = 699.27 : x
  2. Step 2: Convert to fraction form
    2,160.15/3,240.23 = 699.27/x
  3. Step 3: Cross multiply
    2,160.15x = 3,240.23 × 699.27
  4. Step 4: Simplify right side
    2,160.15x = 2,265,792.14
  5. Step 5: Solve for x
    x = 2,265,792.14/2,160.15
  6. Step 6: Final answer
    x = 1,048.91

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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.