Home / 5,618.33-8,428.58-2,155.31

Finding the Fourth Proportional to 5,618.33, 8,428.58 and 2,155.31

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Solution

The fourth proportional to 5,618.33, 8,428.58 and 2,155.31 is: 3,233.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.33 : 8,428.58 = 2,155.31 : x
  2. Step 2: Convert to fraction form
    5,618.33/8,428.58 = 2,155.31/x
  3. Step 3: Cross multiply
    5,618.33x = 8,428.58 × 2,155.31
  4. Step 4: Simplify right side
    5,618.33x = 18,166,229.22
  5. Step 5: Solve for x
    x = 18,166,229.22/5,618.33
  6. Step 6: Final answer
    x = 3,233.38

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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.