Home / 4,280.64-5,905.81-3,163.92

Finding the Fourth Proportional to 4,280.64, 5,905.81 and 3,163.92

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Solution

The fourth proportional to 4,280.64, 5,905.81 and 3,163.92 is: 4,365.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.64 : 5,905.81 = 3,163.92 : x
  2. Step 2: Convert to fraction form
    4,280.64/5,905.81 = 3,163.92/x
  3. Step 3: Cross multiply
    4,280.64x = 5,905.81 × 3,163.92
  4. Step 4: Simplify right side
    4,280.64x = 18,685,510.38
  5. Step 5: Solve for x
    x = 18,685,510.38/4,280.64
  6. Step 6: Final answer
    x = 4,365.12

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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.