Home / 2,379.13-3,283.20-1,331.39

Finding the Fourth Proportional to 2,379.13, 3,283.20 and 1,331.39

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Solution

The fourth proportional to 2,379.13, 3,283.20 and 1,331.39 is: 1,837.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.13 : 3,283.20 = 1,331.39 : x
  2. Step 2: Convert to fraction form
    2,379.13/3,283.20 = 1,331.39/x
  3. Step 3: Cross multiply
    2,379.13x = 3,283.20 × 1,331.39
  4. Step 4: Simplify right side
    2,379.13x = 4,371,219.65
  5. Step 5: Solve for x
    x = 4,371,219.65/2,379.13
  6. Step 6: Final answer
    x = 1,837.32

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1.5x scale

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.