Home / 1,968.32-2,717.55-1,223.36

Finding the Fourth Proportional to 1,968.32, 2,717.55 and 1,223.36

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Solution

The fourth proportional to 1,968.32, 2,717.55 and 1,223.36 is: 1,689.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.32 : 2,717.55 = 1,223.36 : x
  2. Step 2: Convert to fraction form
    1,968.32/2,717.55 = 1,223.36/x
  3. Step 3: Cross multiply
    1,968.32x = 2,717.55 × 1,223.36
  4. Step 4: Simplify right side
    1,968.32x = 3,324,538.57
  5. Step 5: Solve for x
    x = 3,324,538.57/1,968.32
  6. Step 6: Final answer
    x = 1,689.02

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1.5x scale

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.