Home / 5,619.38-8,428.38-1,921.53

Finding the Fourth Proportional to 5,619.38, 8,428.38 and 1,921.53

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Solution

The fourth proportional to 5,619.38, 8,428.38 and 1,921.53 is: 2,882.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.38 : 8,428.38 = 1,921.53 : x
  2. Step 2: Convert to fraction form
    5,619.38/8,428.38 = 1,921.53/x
  3. Step 3: Cross multiply
    5,619.38x = 8,428.38 × 1,921.53
  4. Step 4: Simplify right side
    5,619.38x = 16,195,385.02
  5. Step 5: Solve for x
    x = 16,195,385.02/5,619.38
  6. Step 6: Final answer
    x = 2,882.06

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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.