Home / 2,154.18-3,231.27-693.36

Finding the Fourth Proportional to 2,154.18, 3,231.27 and 693.36

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Solution

The fourth proportional to 2,154.18, 3,231.27 and 693.36 is: 1,040.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.18 : 3,231.27 = 693.36 : x
  2. Step 2: Convert to fraction form
    2,154.18/3,231.27 = 693.36/x
  3. Step 3: Cross multiply
    2,154.18x = 3,231.27 × 693.36
  4. Step 4: Simplify right side
    2,154.18x = 2,240,433.37
  5. Step 5: Solve for x
    x = 2,240,433.37/2,154.18
  6. Step 6: Final answer
    x = 1,040.04

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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.