Home / 1,423.30-2,125.33-1,231.30

Finding the Fourth Proportional to 1,423.30, 2,125.33 and 1,231.30

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Solution

The fourth proportional to 1,423.30, 2,125.33 and 1,231.30 is: 1,838.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.30 : 2,125.33 = 1,231.30 : x
  2. Step 2: Convert to fraction form
    1,423.30/2,125.33 = 1,231.30/x
  3. Step 3: Cross multiply
    1,423.30x = 2,125.33 × 1,231.30
  4. Step 4: Simplify right side
    1,423.30x = 2,616,918.83
  5. Step 5: Solve for x
    x = 2,616,918.83/1,423.30
  6. Step 6: Final answer
    x = 1,838.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.