Home / 2,160.05-3,239.40-698.90

Finding the Fourth Proportional to 2,160.05, 3,239.40 and 698.90

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Solution

The fourth proportional to 2,160.05, 3,239.40 and 698.90 is: 1,048.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.05 : 3,239.40 = 698.90 : x
  2. Step 2: Convert to fraction form
    2,160.05/3,239.40 = 698.90/x
  3. Step 3: Cross multiply
    2,160.05x = 3,239.40 × 698.90
  4. Step 4: Simplify right side
    2,160.05x = 2,264,005.07
  5. Step 5: Solve for x
    x = 2,264,005.07/2,160.05
  6. Step 6: Final answer
    x = 1,048.13

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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.