Home / 7,091.46-10,638.81-3,807.78

Finding the Fourth Proportional to 7,091.46, 10,638.81 and 3,807.78

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Solution

The fourth proportional to 7,091.46, 10,638.81 and 3,807.78 is: 5,712.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.46 : 10,638.81 = 3,807.78 : x
  2. Step 2: Convert to fraction form
    7,091.46/10,638.81 = 3,807.78/x
  3. Step 3: Cross multiply
    7,091.46x = 10,638.81 × 3,807.78
  4. Step 4: Simplify right side
    7,091.46x = 40,510,247.94
  5. Step 5: Solve for x
    x = 40,510,247.94/7,091.46
  6. Step 6: Final answer
    x = 5,712.54

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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.