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Finding the Fourth Proportional to 1,833.44, 2,750.15 and 1,421.55

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Solution

The fourth proportional to 1,833.44, 2,750.15 and 1,421.55 is: 2,132.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,833.44 : 2,750.15 = 1,421.55 : x
  2. Step 2: Convert to fraction form
    1,833.44/2,750.15 = 1,421.55/x
  3. Step 3: Cross multiply
    1,833.44x = 2,750.15 × 1,421.55
  4. Step 4: Simplify right side
    1,833.44x = 3,909,479.29
  5. Step 5: Solve for x
    x = 3,909,479.29/1,833.44
  6. Step 6: Final answer
    x = 2,132.33

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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.