Home / 2,391.90-3,299.40-2,125.86

Finding the Fourth Proportional to 2,391.90, 3,299.40 and 2,125.86

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Solution

The fourth proportional to 2,391.90, 3,299.40 and 2,125.86 is: 2,932.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.90 : 3,299.40 = 2,125.86 : x
  2. Step 2: Convert to fraction form
    2,391.90/3,299.40 = 2,125.86/x
  3. Step 3: Cross multiply
    2,391.90x = 3,299.40 × 2,125.86
  4. Step 4: Simplify right side
    2,391.90x = 7,014,062.48
  5. Step 5: Solve for x
    x = 7,014,062.48/2,391.90
  6. Step 6: Final answer
    x = 2,932.42

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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.