Home / 5,407.89-8,112.41-2,288.21

Finding the Fourth Proportional to 5,407.89, 8,112.41 and 2,288.21

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Solution

The fourth proportional to 5,407.89, 8,112.41 and 2,288.21 is: 3,432.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,407.89 : 8,112.41 = 2,288.21 : x
  2. Step 2: Convert to fraction form
    5,407.89/8,112.41 = 2,288.21/x
  3. Step 3: Cross multiply
    5,407.89x = 8,112.41 × 2,288.21
  4. Step 4: Simplify right side
    5,407.89x = 18,562,897.69
  5. Step 5: Solve for x
    x = 18,562,897.69/5,407.89
  6. Step 6: Final answer
    x = 3,432.56

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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.