Home / 7,639.80-11,452.38-4,857.86

Finding the Fourth Proportional to 7,639.80, 11,452.38 and 4,857.86

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Solution

The fourth proportional to 7,639.80, 11,452.38 and 4,857.86 is: 7,282.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.80 : 11,452.38 = 4,857.86 : x
  2. Step 2: Convert to fraction form
    7,639.80/11,452.38 = 4,857.86/x
  3. Step 3: Cross multiply
    7,639.80x = 11,452.38 × 4,857.86
  4. Step 4: Simplify right side
    7,639.80x = 55,634,034.42
  5. Step 5: Solve for x
    x = 55,634,034.42/7,639.80
  6. Step 6: Final answer
    x = 7,282.13

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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.