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Finding the Fourth Proportional to 2,774.64, 4,161.12 and 925.29

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Solution

The fourth proportional to 2,774.64, 4,161.12 and 925.29 is: 1,387.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.64 : 4,161.12 = 925.29 : x
  2. Step 2: Convert to fraction form
    2,774.64/4,161.12 = 925.29/x
  3. Step 3: Cross multiply
    2,774.64x = 4,161.12 × 925.29
  4. Step 4: Simplify right side
    2,774.64x = 3,850,242.72
  5. Step 5: Solve for x
    x = 3,850,242.72/2,774.64
  6. Step 6: Final answer
    x = 1,387.65

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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.