Home / 1,647.72-2,272.28-1,229.08

Finding the Fourth Proportional to 1,647.72, 2,272.28 and 1,229.08

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Solution

The fourth proportional to 1,647.72, 2,272.28 and 1,229.08 is: 1,694.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.72 : 2,272.28 = 1,229.08 : x
  2. Step 2: Convert to fraction form
    1,647.72/2,272.28 = 1,229.08/x
  3. Step 3: Cross multiply
    1,647.72x = 2,272.28 × 1,229.08
  4. Step 4: Simplify right side
    1,647.72x = 2,792,813.90
  5. Step 5: Solve for x
    x = 2,792,813.90/1,647.72
  6. Step 6: Final answer
    x = 1,694.96

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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.