Home / 3,098.48-4,269.60-2,879.76

Finding the Fourth Proportional to 3,098.48, 4,269.60 and 2,879.76

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Solution

The fourth proportional to 3,098.48, 4,269.60 and 2,879.76 is: 3,968.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,098.48 : 4,269.60 = 2,879.76 : x
  2. Step 2: Convert to fraction form
    3,098.48/4,269.60 = 2,879.76/x
  3. Step 3: Cross multiply
    3,098.48x = 4,269.60 × 2,879.76
  4. Step 4: Simplify right side
    3,098.48x = 12,295,423.30
  5. Step 5: Solve for x
    x = 12,295,423.30/3,098.48
  6. Step 6: Final answer
    x = 3,968.21

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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.