Home / 5,085.18-7,629.60-3,135.12

Finding the Fourth Proportional to 5,085.18, 7,629.60 and 3,135.12

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Solution

The fourth proportional to 5,085.18, 7,629.60 and 3,135.12 is: 4,703.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.18 : 7,629.60 = 3,135.12 : x
  2. Step 2: Convert to fraction form
    5,085.18/7,629.60 = 3,135.12/x
  3. Step 3: Cross multiply
    5,085.18x = 7,629.60 × 3,135.12
  4. Step 4: Simplify right side
    5,085.18x = 23,919,711.55
  5. Step 5: Solve for x
    x = 23,919,711.55/5,085.18
  6. Step 6: Final answer
    x = 4,703.81

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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.