Home / 7,758.42-11,637.69-2,211.75

Finding the Fourth Proportional to 7,758.42, 11,637.69 and 2,211.75

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Solution

The fourth proportional to 7,758.42, 11,637.69 and 2,211.75 is: 3,317.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,758.42 : 11,637.69 = 2,211.75 : x
  2. Step 2: Convert to fraction form
    7,758.42/11,637.69 = 2,211.75/x
  3. Step 3: Cross multiply
    7,758.42x = 11,637.69 × 2,211.75
  4. Step 4: Simplify right side
    7,758.42x = 25,739,660.86
  5. Step 5: Solve for x
    x = 25,739,660.86/7,758.42
  6. Step 6: Final answer
    x = 3,317.64

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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.