Home / 1,929.88-2,881.79-1,909.54

Finding the Fourth Proportional to 1,929.88, 2,881.79 and 1,909.54

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Solution

The fourth proportional to 1,929.88, 2,881.79 and 1,909.54 is: 2,851.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.88 : 2,881.79 = 1,909.54 : x
  2. Step 2: Convert to fraction form
    1,929.88/2,881.79 = 1,909.54/x
  3. Step 3: Cross multiply
    1,929.88x = 2,881.79 × 1,909.54
  4. Step 4: Simplify right side
    1,929.88x = 5,502,893.28
  5. Step 5: Solve for x
    x = 5,502,893.28/1,929.88
  6. Step 6: Final answer
    x = 2,851.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.