Home / 5,155.68-7,115.76-3,060.96

Finding the Fourth Proportional to 5,155.68, 7,115.76 and 3,060.96

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Solution

The fourth proportional to 5,155.68, 7,115.76 and 3,060.96 is: 4,224.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.68 : 7,115.76 = 3,060.96 : x
  2. Step 2: Convert to fraction form
    5,155.68/7,115.76 = 3,060.96/x
  3. Step 3: Cross multiply
    5,155.68x = 7,115.76 × 3,060.96
  4. Step 4: Simplify right side
    5,155.68x = 21,781,056.73
  5. Step 5: Solve for x
    x = 21,781,056.73/5,155.68
  6. Step 6: Final answer
    x = 4,224.67

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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.