Home / 1,231.17-1,846.77-409.38

Finding the Fourth Proportional to 1,231.17, 1,846.77 and 409.38

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Solution

The fourth proportional to 1,231.17, 1,846.77 and 409.38 is: 614.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.17 : 1,846.77 = 409.38 : x
  2. Step 2: Convert to fraction form
    1,231.17/1,846.77 = 409.38/x
  3. Step 3: Cross multiply
    1,231.17x = 1,846.77 × 409.38
  4. Step 4: Simplify right side
    1,231.17x = 756,030.89
  5. Step 5: Solve for x
    x = 756,030.89/1,231.17
  6. Step 6: Final answer
    x = 614.07

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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.