Home / 5,216.78-7,199.12-2,858.92

Finding the Fourth Proportional to 5,216.78, 7,199.12 and 2,858.92

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Solution

The fourth proportional to 5,216.78, 7,199.12 and 2,858.92 is: 3,945.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.78 : 7,199.12 = 2,858.92 : x
  2. Step 2: Convert to fraction form
    5,216.78/7,199.12 = 2,858.92/x
  3. Step 3: Cross multiply
    5,216.78x = 7,199.12 × 2,858.92
  4. Step 4: Simplify right side
    5,216.78x = 20,581,657.86
  5. Step 5: Solve for x
    x = 20,581,657.86/5,216.78
  6. Step 6: Final answer
    x = 3,945.28

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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.