Home / 7,778.56-11,639.12-4,660.76

Finding the Fourth Proportional to 7,778.56, 11,639.12 and 4,660.76

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Solution

The fourth proportional to 7,778.56, 11,639.12 and 4,660.76 is: 6,973.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.56 : 11,639.12 = 4,660.76 : x
  2. Step 2: Convert to fraction form
    7,778.56/11,639.12 = 4,660.76/x
  3. Step 3: Cross multiply
    7,778.56x = 11,639.12 × 4,660.76
  4. Step 4: Simplify right side
    7,778.56x = 54,247,185.68
  5. Step 5: Solve for x
    x = 54,247,185.68/7,778.56
  6. Step 6: Final answer
    x = 6,973.94

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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.