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Finding the Fourth Proportional to 2,776.88, 3,832.92 and 1,728.32

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Solution

The fourth proportional to 2,776.88, 3,832.92 and 1,728.32 is: 2,385.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.88 : 3,832.92 = 1,728.32 : x
  2. Step 2: Convert to fraction form
    2,776.88/3,832.92 = 1,728.32/x
  3. Step 3: Cross multiply
    2,776.88x = 3,832.92 × 1,728.32
  4. Step 4: Simplify right side
    2,776.88x = 6,624,512.29
  5. Step 5: Solve for x
    x = 6,624,512.29/2,776.88
  6. Step 6: Final answer
    x = 2,385.60

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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.