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Finding the Fourth Proportional to 1,913.54, 2,867.90 and 873.23

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Solution

The fourth proportional to 1,913.54, 2,867.90 and 873.23 is: 1,308.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.54 : 2,867.90 = 873.23 : x
  2. Step 2: Convert to fraction form
    1,913.54/2,867.90 = 873.23/x
  3. Step 3: Cross multiply
    1,913.54x = 2,867.90 × 873.23
  4. Step 4: Simplify right side
    1,913.54x = 2,504,317.61
  5. Step 5: Solve for x
    x = 2,504,317.61/1,913.54
  6. Step 6: Final answer
    x = 1,308.74

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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.