Home / 2,479.80-3,720.36-2,207.75

Finding the Fourth Proportional to 2,479.80, 3,720.36 and 2,207.75

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Solution

The fourth proportional to 2,479.80, 3,720.36 and 2,207.75 is: 3,312.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.80 : 3,720.36 = 2,207.75 : x
  2. Step 2: Convert to fraction form
    2,479.80/3,720.36 = 2,207.75/x
  3. Step 3: Cross multiply
    2,479.80x = 3,720.36 × 2,207.75
  4. Step 4: Simplify right side
    2,479.80x = 8,213,606.19
  5. Step 5: Solve for x
    x = 8,213,606.19/2,479.80
  6. Step 6: Final answer
    x = 3,312.21

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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.