Home / 5,402.69-8,091.44-5,215.61

Finding the Fourth Proportional to 5,402.69, 8,091.44 and 5,215.61

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Solution

The fourth proportional to 5,402.69, 8,091.44 and 5,215.61 is: 7,811.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,402.69 : 8,091.44 = 5,215.61 : x
  2. Step 2: Convert to fraction form
    5,402.69/8,091.44 = 5,215.61/x
  3. Step 3: Cross multiply
    5,402.69x = 8,091.44 × 5,215.61
  4. Step 4: Simplify right side
    5,402.69x = 42,201,795.38
  5. Step 5: Solve for x
    x = 42,201,795.38/5,402.69
  6. Step 6: Final answer
    x = 7,811.26

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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.