Home / 1,929.44-2,890.68-1,623.20

Finding the Fourth Proportional to 1,929.44, 2,890.68 and 1,623.20

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Solution

The fourth proportional to 1,929.44, 2,890.68 and 1,623.20 is: 2,431.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.44 : 2,890.68 = 1,623.20 : x
  2. Step 2: Convert to fraction form
    1,929.44/2,890.68 = 1,623.20/x
  3. Step 3: Cross multiply
    1,929.44x = 2,890.68 × 1,623.20
  4. Step 4: Simplify right side
    1,929.44x = 4,692,151.78
  5. Step 5: Solve for x
    x = 4,692,151.78/1,929.44
  6. Step 6: Final answer
    x = 2,431.87

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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.