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Finding the Fourth Proportional to 3,114.72, 4,672.08 and 925.09

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Solution

The fourth proportional to 3,114.72, 4,672.08 and 925.09 is: 1,387.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,114.72 : 4,672.08 = 925.09 : x
  2. Step 2: Convert to fraction form
    3,114.72/4,672.08 = 925.09/x
  3. Step 3: Cross multiply
    3,114.72x = 4,672.08 × 925.09
  4. Step 4: Simplify right side
    3,114.72x = 4,322,082.81
  5. Step 5: Solve for x
    x = 4,322,082.81/3,114.72
  6. Step 6: Final answer
    x = 1,387.63

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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.