Home / 2,669.80-3,686.05-2,389.54

Finding the Fourth Proportional to 2,669.80, 3,686.05 and 2,389.54

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Solution

The fourth proportional to 2,669.80, 3,686.05 and 2,389.54 is: 3,299.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.80 : 3,686.05 = 2,389.54 : x
  2. Step 2: Convert to fraction form
    2,669.80/3,686.05 = 2,389.54/x
  3. Step 3: Cross multiply
    2,669.80x = 3,686.05 × 2,389.54
  4. Step 4: Simplify right side
    2,669.80x = 8,807,951.97
  5. Step 5: Solve for x
    x = 8,807,951.97/2,669.80
  6. Step 6: Final answer
    x = 3,299.11

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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.