Home / 2,289.28-3,158.87-1,280.98

Finding the Fourth Proportional to 2,289.28, 3,158.87 and 1,280.98

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Solution

The fourth proportional to 2,289.28, 3,158.87 and 1,280.98 is: 1,767.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.28 : 3,158.87 = 1,280.98 : x
  2. Step 2: Convert to fraction form
    2,289.28/3,158.87 = 1,280.98/x
  3. Step 3: Cross multiply
    2,289.28x = 3,158.87 × 1,280.98
  4. Step 4: Simplify right side
    2,289.28x = 4,046,443.36
  5. Step 5: Solve for x
    x = 4,046,443.36/2,289.28
  6. Step 6: Final answer
    x = 1,767.56

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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.