Home / 5,902.20-8,148.36-3,916.15

Finding the Fourth Proportional to 5,902.20, 8,148.36 and 3,916.15

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Solution

The fourth proportional to 5,902.20, 8,148.36 and 3,916.15 is: 5,406.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,902.20 : 8,148.36 = 3,916.15 : x
  2. Step 2: Convert to fraction form
    5,902.20/8,148.36 = 3,916.15/x
  3. Step 3: Cross multiply
    5,902.20x = 8,148.36 × 3,916.15
  4. Step 4: Simplify right side
    5,902.20x = 31,910,194.33
  5. Step 5: Solve for x
    x = 31,910,194.33/5,902.20
  6. Step 6: Final answer
    x = 5,406.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.