Home / 2,663.21-3,989.95-1,487.09

Finding the Fourth Proportional to 2,663.21, 3,989.95 and 1,487.09

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Solution

The fourth proportional to 2,663.21, 3,989.95 and 1,487.09 is: 2,227.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,663.21 : 3,989.95 = 1,487.09 : x
  2. Step 2: Convert to fraction form
    2,663.21/3,989.95 = 1,487.09/x
  3. Step 3: Cross multiply
    2,663.21x = 3,989.95 × 1,487.09
  4. Step 4: Simplify right side
    2,663.21x = 5,933,391.08
  5. Step 5: Solve for x
    x = 5,933,391.08/2,663.21
  6. Step 6: Final answer
    x = 2,227.91

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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.