Home / 4,428.20-6,638.66-2,087.00

Finding the Fourth Proportional to 4,428.20, 6,638.66 and 2,087.00

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Solution

The fourth proportional to 4,428.20, 6,638.66 and 2,087.00 is: 3,128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,428.20 : 6,638.66 = 2,087.00 : x
  2. Step 2: Convert to fraction form
    4,428.20/6,638.66 = 2,087.00/x
  3. Step 3: Cross multiply
    4,428.20x = 6,638.66 × 2,087.00
  4. Step 4: Simplify right side
    4,428.20x = 13,854,872.51
  5. Step 5: Solve for x
    x = 13,854,872.51/4,428.20
  6. Step 6: Final answer
    x = 3,128.78

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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.