Home / 2,728.08-3,762.76-1,680.72

Finding the Fourth Proportional to 2,728.08, 3,762.76 and 1,680.72

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Solution

The fourth proportional to 2,728.08, 3,762.76 and 1,680.72 is: 2,318.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,728.08 : 3,762.76 = 1,680.72 : x
  2. Step 2: Convert to fraction form
    2,728.08/3,762.76 = 1,680.72/x
  3. Step 3: Cross multiply
    2,728.08x = 3,762.76 × 1,680.72
  4. Step 4: Simplify right side
    2,728.08x = 6,324,145.99
  5. Step 5: Solve for x
    x = 6,324,145.99/2,728.08
  6. Step 6: Final answer
    x = 2,318.17

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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.