Home / 4,479.12-6,715.89-2,139.03

Finding the Fourth Proportional to 4,479.12, 6,715.89 and 2,139.03

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Solution

The fourth proportional to 4,479.12, 6,715.89 and 2,139.03 is: 3,207.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,479.12 : 6,715.89 = 2,139.03 : x
  2. Step 2: Convert to fraction form
    4,479.12/6,715.89 = 2,139.03/x
  3. Step 3: Cross multiply
    4,479.12x = 6,715.89 × 2,139.03
  4. Step 4: Simplify right side
    4,479.12x = 14,365,490.19
  5. Step 5: Solve for x
    x = 14,365,490.19/4,479.12
  6. Step 6: Final answer
    x = 3,207.21

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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.