Home / 7,954.80-11,931.74-2,689.58

Finding the Fourth Proportional to 7,954.80, 11,931.74 and 2,689.58

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Solution

The fourth proportional to 7,954.80, 11,931.74 and 2,689.58 is: 4,034.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,954.80 : 11,931.74 = 2,689.58 : x
  2. Step 2: Convert to fraction form
    7,954.80/11,931.74 = 2,689.58/x
  3. Step 3: Cross multiply
    7,954.80x = 11,931.74 × 2,689.58
  4. Step 4: Simplify right side
    7,954.80x = 32,091,369.27
  5. Step 5: Solve for x
    x = 32,091,369.27/7,954.80
  6. Step 6: Final answer
    x = 4,034.21

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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.