Home / 1,929.96-2,660.58-1,377

Finding the Fourth Proportional to 1,929.96, 2,660.58 and 1,377

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Solution

The fourth proportional to 1,929.96, 2,660.58 and 1,377 is: 1,898.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929.96 : 2,660.58 = 1,377 : x
  2. Step 2: Convert to fraction form
    1,929.96/2,660.58 = 1,377/x
  3. Step 3: Cross multiply
    1,929.96x = 2,660.58 × 1,377
  4. Step 4: Simplify right side
    1,929.96x = 3,663,618.66
  5. Step 5: Solve for x
    x = 3,663,618.66/1,929.96
  6. Step 6: Final answer
    x = 1,898.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.