Home / 5,618.91-8,428.29-1,458.54

Finding the Fourth Proportional to 5,618.91, 8,428.29 and 1,458.54

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Solution

The fourth proportional to 5,618.91, 8,428.29 and 1,458.54 is: 2,187.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.91 : 8,428.29 = 1,458.54 : x
  2. Step 2: Convert to fraction form
    5,618.91/8,428.29 = 1,458.54/x
  3. Step 3: Cross multiply
    5,618.91x = 8,428.29 × 1,458.54
  4. Step 4: Simplify right side
    5,618.91x = 12,292,998.10
  5. Step 5: Solve for x
    x = 12,292,998.10/5,618.91
  6. Step 6: Final answer
    x = 2,187.79

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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.