Home / 7,718.18-11,577.74-2,171.98

Finding the Fourth Proportional to 7,718.18, 11,577.74 and 2,171.98

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Solution

The fourth proportional to 7,718.18, 11,577.74 and 2,171.98 is: 3,258.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.18 : 11,577.74 = 2,171.98 : x
  2. Step 2: Convert to fraction form
    7,718.18/11,577.74 = 2,171.98/x
  3. Step 3: Cross multiply
    7,718.18x = 11,577.74 × 2,171.98
  4. Step 4: Simplify right side
    7,718.18x = 25,146,619.73
  5. Step 5: Solve for x
    x = 25,146,619.73/7,718.18
  6. Step 6: Final answer
    x = 3,258.10

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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.