Home / 2,639.06-3,948.84-2,172.50

Finding the Fourth Proportional to 2,639.06, 3,948.84 and 2,172.50

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Solution

The fourth proportional to 2,639.06, 3,948.84 and 2,172.50 is: 3,250.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.06 : 3,948.84 = 2,172.50 : x
  2. Step 2: Convert to fraction form
    2,639.06/3,948.84 = 2,172.50/x
  3. Step 3: Cross multiply
    2,639.06x = 3,948.84 × 2,172.50
  4. Step 4: Simplify right side
    2,639.06x = 8,578,854.90
  5. Step 5: Solve for x
    x = 8,578,854.90/2,639.06
  6. Step 6: Final answer
    x = 3,250.72

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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.