Home / 2,728.72-3,764.08-1,680.04

Finding the Fourth Proportional to 2,728.72, 3,764.08 and 1,680.04

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Solution

The fourth proportional to 2,728.72, 3,764.08 and 1,680.04 is: 2,317.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.72 : 3,764.08 = 1,680.04 : x
  2. Step 2: Convert to fraction form
    2,728.72/3,764.08 = 1,680.04/x
  3. Step 3: Cross multiply
    2,728.72x = 3,764.08 × 1,680.04
  4. Step 4: Simplify right side
    2,728.72x = 6,323,804.96
  5. Step 5: Solve for x
    x = 6,323,804.96/2,728.72
  6. Step 6: Final answer
    x = 2,317.50

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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.