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Finding the Fourth Proportional to 2,567.70, 3,851.28 and 719.01

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Solution

The fourth proportional to 2,567.70, 3,851.28 and 719.01 is: 1,078.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,567.70 : 3,851.28 = 719.01 : x
  2. Step 2: Convert to fraction form
    2,567.70/3,851.28 = 719.01/x
  3. Step 3: Cross multiply
    2,567.70x = 3,851.28 × 719.01
  4. Step 4: Simplify right side
    2,567.70x = 2,769,108.83
  5. Step 5: Solve for x
    x = 2,769,108.83/2,567.70
  6. Step 6: Final answer
    x = 1,078.44

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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.