Home / 4,184.80-6,278.11-1,990.51

Finding the Fourth Proportional to 4,184.80, 6,278.11 and 1,990.51

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Solution

The fourth proportional to 4,184.80, 6,278.11 and 1,990.51 is: 2,986.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,184.80 : 6,278.11 = 1,990.51 : x
  2. Step 2: Convert to fraction form
    4,184.80/6,278.11 = 1,990.51/x
  3. Step 3: Cross multiply
    4,184.80x = 6,278.11 × 1,990.51
  4. Step 4: Simplify right side
    4,184.80x = 12,496,620.06
  5. Step 5: Solve for x
    x = 12,496,620.06/4,184.80
  6. Step 6: Final answer
    x = 2,986.19

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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.