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Finding the Fourth Proportional to 2,912.54, 4,368.87 and 964.76

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Solution

The fourth proportional to 2,912.54, 4,368.87 and 964.76 is: 1,447.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.54 : 4,368.87 = 964.76 : x
  2. Step 2: Convert to fraction form
    2,912.54/4,368.87 = 964.76/x
  3. Step 3: Cross multiply
    2,912.54x = 4,368.87 × 964.76
  4. Step 4: Simplify right side
    2,912.54x = 4,214,889.18
  5. Step 5: Solve for x
    x = 4,214,889.18/2,912.54
  6. Step 6: Final answer
    x = 1,447.15

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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.