Home / 8,235.20-12,351.36-2,391.20

Finding the Fourth Proportional to 8,235.20, 12,351.36 and 2,391.20

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Solution

The fourth proportional to 8,235.20, 12,351.36 and 2,391.20 is: 3,586.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,235.20 : 12,351.36 = 2,391.20 : x
  2. Step 2: Convert to fraction form
    8,235.20/12,351.36 = 2,391.20/x
  3. Step 3: Cross multiply
    8,235.20x = 12,351.36 × 2,391.20
  4. Step 4: Simplify right side
    8,235.20x = 29,534,572.03
  5. Step 5: Solve for x
    x = 29,534,572.03/8,235.20
  6. Step 6: Final answer
    x = 3,586.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.