Home / 1,954.78-2,698.56-1,328.62

Finding the Fourth Proportional to 1,954.78, 2,698.56 and 1,328.62

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Solution

The fourth proportional to 1,954.78, 2,698.56 and 1,328.62 is: 1,834.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.78 : 2,698.56 = 1,328.62 : x
  2. Step 2: Convert to fraction form
    1,954.78/2,698.56 = 1,328.62/x
  3. Step 3: Cross multiply
    1,954.78x = 2,698.56 × 1,328.62
  4. Step 4: Simplify right side
    1,954.78x = 3,585,360.79
  5. Step 5: Solve for x
    x = 3,585,360.79/1,954.78
  6. Step 6: Final answer
    x = 1,834.15

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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.