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Finding the Fourth Proportional to 2,775.36, 4,161.50 and 925.49

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Solution

The fourth proportional to 2,775.36, 4,161.50 and 925.49 is: 1,387.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.36 : 4,161.50 = 925.49 : x
  2. Step 2: Convert to fraction form
    2,775.36/4,161.50 = 925.49/x
  3. Step 3: Cross multiply
    2,775.36x = 4,161.50 × 925.49
  4. Step 4: Simplify right side
    2,775.36x = 3,851,401.20
  5. Step 5: Solve for x
    x = 3,851,401.20/2,775.36
  6. Step 6: Final answer
    x = 1,387.71

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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.