Home / 2,775.24-4,168.80-1,680.12

Finding the Fourth Proportional to 2,775.24, 4,168.80 and 1,680.12

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Solution

The fourth proportional to 2,775.24, 4,168.80 and 1,680.12 is: 2,523.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.24 : 4,168.80 = 1,680.12 : x
  2. Step 2: Convert to fraction form
    2,775.24/4,168.80 = 1,680.12/x
  3. Step 3: Cross multiply
    2,775.24x = 4,168.80 × 1,680.12
  4. Step 4: Simplify right side
    2,775.24x = 7,004,084.26
  5. Step 5: Solve for x
    x = 7,004,084.26/2,775.24
  6. Step 6: Final answer
    x = 2,523.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.