Home / 2,775.20-4,164.12-1,851.20

Finding the Fourth Proportional to 2,775.20, 4,164.12 and 1,851.20

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Solution

The fourth proportional to 2,775.20, 4,164.12 and 1,851.20 is: 2,777.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.20 : 4,164.12 = 1,851.20 : x
  2. Step 2: Convert to fraction form
    2,775.20/4,164.12 = 1,851.20/x
  3. Step 3: Cross multiply
    2,775.20x = 4,164.12 × 1,851.20
  4. Step 4: Simplify right side
    2,775.20x = 7,708,618.94
  5. Step 5: Solve for x
    x = 7,708,618.94/2,775.20
  6. Step 6: Final answer
    x = 2,777.68

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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.