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Finding the Fourth Proportional to 2,309.42, 3,463.71 and 749.36

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Solution

The fourth proportional to 2,309.42, 3,463.71 and 749.36 is: 1,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.42 : 3,463.71 = 749.36 : x
  2. Step 2: Convert to fraction form
    2,309.42/3,463.71 = 749.36/x
  3. Step 3: Cross multiply
    2,309.42x = 3,463.71 × 749.36
  4. Step 4: Simplify right side
    2,309.42x = 2,595,548.41
  5. Step 5: Solve for x
    x = 2,595,548.41/2,309.42
  6. Step 6: Final answer
    x = 1,123.90

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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.