Home / 2,775.20-4,167.25-1,839.58

Finding the Fourth Proportional to 2,775.20, 4,167.25 and 1,839.58

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Solution

The fourth proportional to 2,775.20, 4,167.25 and 1,839.58 is: 2,762.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.20 : 4,167.25 = 1,839.58 : x
  2. Step 2: Convert to fraction form
    2,775.20/4,167.25 = 1,839.58/x
  3. Step 3: Cross multiply
    2,775.20x = 4,167.25 × 1,839.58
  4. Step 4: Simplify right side
    2,775.20x = 7,665,974.74
  5. Step 5: Solve for x
    x = 7,665,974.74/2,775.20
  6. Step 6: Final answer
    x = 2,762.32

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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.