Home / 3,120.28-4,681.39-1,872.27

Finding the Fourth Proportional to 3,120.28, 4,681.39 and 1,872.27

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Solution

The fourth proportional to 3,120.28, 4,681.39 and 1,872.27 is: 2,808.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.28 : 4,681.39 = 1,872.27 : x
  2. Step 2: Convert to fraction form
    3,120.28/4,681.39 = 1,872.27/x
  3. Step 3: Cross multiply
    3,120.28x = 4,681.39 × 1,872.27
  4. Step 4: Simplify right side
    3,120.28x = 8,764,793.29
  5. Step 5: Solve for x
    x = 8,764,793.29/3,120.28
  6. Step 6: Final answer
    x = 2,808.98

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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.