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Finding the Fourth Proportional to 2,580.69, 3,871.03 and 632.91

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Solution

The fourth proportional to 2,580.69, 3,871.03 and 632.91 is: 949.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,580.69 : 3,871.03 = 632.91 : x
  2. Step 2: Convert to fraction form
    2,580.69/3,871.03 = 632.91/x
  3. Step 3: Cross multiply
    2,580.69x = 3,871.03 × 632.91
  4. Step 4: Simplify right side
    2,580.69x = 2,450,013.60
  5. Step 5: Solve for x
    x = 2,450,013.60/2,580.69
  6. Step 6: Final answer
    x = 949.36

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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.