Home / 2,150.19-3,225.69-688.95

Finding the Fourth Proportional to 2,150.19, 3,225.69 and 688.95

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Solution

The fourth proportional to 2,150.19, 3,225.69 and 688.95 is: 1,033.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,150.19 : 3,225.69 = 688.95 : x
  2. Step 2: Convert to fraction form
    2,150.19/3,225.69 = 688.95/x
  3. Step 3: Cross multiply
    2,150.19x = 3,225.69 × 688.95
  4. Step 4: Simplify right side
    2,150.19x = 2,222,339.13
  5. Step 5: Solve for x
    x = 2,222,339.13/2,150.19
  6. Step 6: Final answer
    x = 1,033.55

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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.