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Finding the Fourth Proportional to 1,929.03, 2,893.55 and 1,281.03

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Solution

The fourth proportional to 1,929.03, 2,893.55 and 1,281.03 is: 1,921.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.03 : 2,893.55 = 1,281.03 : x
  2. Step 2: Convert to fraction form
    1,929.03/2,893.55 = 1,281.03/x
  3. Step 3: Cross multiply
    1,929.03x = 2,893.55 × 1,281.03
  4. Step 4: Simplify right side
    1,929.03x = 3,706,717.95
  5. Step 5: Solve for x
    x = 3,706,717.95/1,929.03
  6. Step 6: Final answer
    x = 1,921.55

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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.