Home / 2,855.28-4,283.19-1,123.50

Finding the Fourth Proportional to 2,855.28, 4,283.19 and 1,123.50

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Solution

The fourth proportional to 2,855.28, 4,283.19 and 1,123.50 is: 1,685.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,855.28 : 4,283.19 = 1,123.50 : x
  2. Step 2: Convert to fraction form
    2,855.28/4,283.19 = 1,123.50/x
  3. Step 3: Cross multiply
    2,855.28x = 4,283.19 × 1,123.50
  4. Step 4: Simplify right side
    2,855.28x = 4,812,163.97
  5. Step 5: Solve for x
    x = 4,812,163.97/2,855.28
  6. Step 6: Final answer
    x = 1,685.36

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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.