Home / 1,963.32-2,707.88-1,217.72

Finding the Fourth Proportional to 1,963.32, 2,707.88 and 1,217.72

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Solution

The fourth proportional to 1,963.32, 2,707.88 and 1,217.72 is: 1,679.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,963.32 : 2,707.88 = 1,217.72 : x
  2. Step 2: Convert to fraction form
    1,963.32/2,707.88 = 1,217.72/x
  3. Step 3: Cross multiply
    1,963.32x = 2,707.88 × 1,217.72
  4. Step 4: Simplify right side
    1,963.32x = 3,297,420.01
  5. Step 5: Solve for x
    x = 3,297,420.01/1,963.32
  6. Step 6: Final answer
    x = 1,679.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.