Home / 2,389.66-3,581.45-1,294.95

Finding the Fourth Proportional to 2,389.66, 3,581.45 and 1,294.95

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Solution

The fourth proportional to 2,389.66, 3,581.45 and 1,294.95 is: 1,940.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.66 : 3,581.45 = 1,294.95 : x
  2. Step 2: Convert to fraction form
    2,389.66/3,581.45 = 1,294.95/x
  3. Step 3: Cross multiply
    2,389.66x = 3,581.45 × 1,294.95
  4. Step 4: Simplify right side
    2,389.66x = 4,637,798.68
  5. Step 5: Solve for x
    x = 4,637,798.68/2,389.66
  6. Step 6: Final answer
    x = 1,940.78

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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.