Home / 2,391.40-3,299.30-1,553.16

Finding the Fourth Proportional to 2,391.40, 3,299.30 and 1,553.16

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Solution

The fourth proportional to 2,391.40, 3,299.30 and 1,553.16 is: 2,142.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.40 : 3,299.30 = 1,553.16 : x
  2. Step 2: Convert to fraction form
    2,391.40/3,299.30 = 1,553.16/x
  3. Step 3: Cross multiply
    2,391.40x = 3,299.30 × 1,553.16
  4. Step 4: Simplify right side
    2,391.40x = 5,124,340.79
  5. Step 5: Solve for x
    x = 5,124,340.79/2,391.40
  6. Step 6: Final answer
    x = 2,142.82

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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.