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Finding the Fourth Proportional to 2,775.11, 4,161.75 and 925.72

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Solution

The fourth proportional to 2,775.11, 4,161.75 and 925.72 is: 1,388.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.11 : 4,161.75 = 925.72 : x
  2. Step 2: Convert to fraction form
    2,775.11/4,161.75 = 925.72/x
  3. Step 3: Cross multiply
    2,775.11x = 4,161.75 × 925.72
  4. Step 4: Simplify right side
    2,775.11x = 3,852,594.40
  5. Step 5: Solve for x
    x = 3,852,594.40/2,775.11
  6. Step 6: Final answer
    x = 1,388.27

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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.