Home / 1,929.90-2,890.80-1,517.07

Finding the Fourth Proportional to 1,929.90, 2,890.80 and 1,517.07

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Solution

The fourth proportional to 1,929.90, 2,890.80 and 1,517.07 is: 2,272.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.90 : 2,890.80 = 1,517.07 : x
  2. Step 2: Convert to fraction form
    1,929.90/2,890.80 = 1,517.07/x
  3. Step 3: Cross multiply
    1,929.90x = 2,890.80 × 1,517.07
  4. Step 4: Simplify right side
    1,929.90x = 4,385,545.96
  5. Step 5: Solve for x
    x = 4,385,545.96/1,929.90
  6. Step 6: Final answer
    x = 2,272.42

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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.