Home / 8,474.40-11,688.84-5,961.78

Finding the Fourth Proportional to 8,474.40, 11,688.84 and 5,961.78

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Solution

The fourth proportional to 8,474.40, 11,688.84 and 5,961.78 is: 8,223.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474.40 : 11,688.84 = 5,961.78 : x
  2. Step 2: Convert to fraction form
    8,474.40/11,688.84 = 5,961.78/x
  3. Step 3: Cross multiply
    8,474.40x = 11,688.84 × 5,961.78
  4. Step 4: Simplify right side
    8,474.40x = 69,686,292.54
  5. Step 5: Solve for x
    x = 69,686,292.54/8,474.40
  6. Step 6: Final answer
    x = 8,223.15

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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.