Home / 5,155.89-7,114.92-2,797.98

Finding the Fourth Proportional to 5,155.89, 7,114.92 and 2,797.98

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Solution

The fourth proportional to 5,155.89, 7,114.92 and 2,797.98 is: 3,861.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,155.89 : 7,114.92 = 2,797.98 : x
  2. Step 2: Convert to fraction form
    5,155.89/7,114.92 = 2,797.98/x
  3. Step 3: Cross multiply
    5,155.89x = 7,114.92 × 2,797.98
  4. Step 4: Simplify right side
    5,155.89x = 19,907,403.86
  5. Step 5: Solve for x
    x = 19,907,403.86/5,155.89
  6. Step 6: Final answer
    x = 3,861.10

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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.