Home / 1,728.83-2,385.49-1,641.28

Finding the Fourth Proportional to 1,728.83, 2,385.49 and 1,641.28

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Solution

The fourth proportional to 1,728.83, 2,385.49 and 1,641.28 is: 2,264.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.83 : 2,385.49 = 1,641.28 : x
  2. Step 2: Convert to fraction form
    1,728.83/2,385.49 = 1,641.28/x
  3. Step 3: Cross multiply
    1,728.83x = 2,385.49 × 1,641.28
  4. Step 4: Simplify right side
    1,728.83x = 3,915,257.03
  5. Step 5: Solve for x
    x = 3,915,257.03/1,728.83
  6. Step 6: Final answer
    x = 2,264.69

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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.