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Finding the Fourth Proportional to 2,889, 3,986.83 and 1,562.71

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Solution

The fourth proportional to 2,889, 3,986.83 and 1,562.71 is: 2,156.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889 : 3,986.83 = 1,562.71 : x
  2. Step 2: Convert to fraction form
    2,889/3,986.83 = 1,562.71/x
  3. Step 3: Cross multiply
    2,889x = 3,986.83 × 1,562.71
  4. Step 4: Simplify right side
    2,889x = 6,230,259.11
  5. Step 5: Solve for x
    x = 6,230,259.11/2,889
  6. Step 6: Final answer
    x = 2,156.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.