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Finding the Fourth Proportional to 2,964.75, 4,447.37 and 912.75

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Solution

The fourth proportional to 2,964.75, 4,447.37 and 912.75 is: 1,369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,964.75 : 4,447.37 = 912.75 : x
  2. Step 2: Convert to fraction form
    2,964.75/4,447.37 = 912.75/x
  3. Step 3: Cross multiply
    2,964.75x = 4,447.37 × 912.75
  4. Step 4: Simplify right side
    2,964.75x = 4,059,332.40
  5. Step 5: Solve for x
    x = 4,059,332.40/2,964.75
  6. Step 6: Final answer
    x = 1,369.20

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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.