Home / 1,963.48-2,708.58-1,217.20

Finding the Fourth Proportional to 1,963.48, 2,708.58 and 1,217.20

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Solution

The fourth proportional to 1,963.48, 2,708.58 and 1,217.20 is: 1,679.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,963.48 : 2,708.58 = 1,217.20 : x
  2. Step 2: Convert to fraction form
    1,963.48/2,708.58 = 1,217.20/x
  3. Step 3: Cross multiply
    1,963.48x = 2,708.58 × 1,217.20
  4. Step 4: Simplify right side
    1,963.48x = 3,296,883.58
  5. Step 5: Solve for x
    x = 3,296,883.58/1,963.48
  6. Step 6: Final answer
    x = 1,679.10

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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.