Home / 8,555.28-11,778.84-7,450.80

Finding the Fourth Proportional to 8,555.28, 11,778.84 and 7,450.80

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Solution

The fourth proportional to 8,555.28, 11,778.84 and 7,450.80 is: 10,258.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,555.28 : 11,778.84 = 7,450.80 : x
  2. Step 2: Convert to fraction form
    8,555.28/11,778.84 = 7,450.80/x
  3. Step 3: Cross multiply
    8,555.28x = 11,778.84 × 7,450.80
  4. Step 4: Simplify right side
    8,555.28x = 87,761,781.07
  5. Step 5: Solve for x
    x = 87,761,781.07/8,555.28
  6. Step 6: Final answer
    x = 10,258.20

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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.