Home / 3,998.12-5,516.87-2,319.30

Finding the Fourth Proportional to 3,998.12, 5,516.87 and 2,319.30

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Solution

The fourth proportional to 3,998.12, 5,516.87 and 2,319.30 is: 3,200.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.12 : 5,516.87 = 2,319.30 : x
  2. Step 2: Convert to fraction form
    3,998.12/5,516.87 = 2,319.30/x
  3. Step 3: Cross multiply
    3,998.12x = 5,516.87 × 2,319.30
  4. Step 4: Simplify right side
    3,998.12x = 12,795,264.99
  5. Step 5: Solve for x
    x = 12,795,264.99/3,998.12
  6. Step 6: Final answer
    x = 3,200.32

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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.