Home / 4,891.42-7,318.74-2,909.75

Finding the Fourth Proportional to 4,891.42, 7,318.74 and 2,909.75

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Solution

The fourth proportional to 4,891.42, 7,318.74 and 2,909.75 is: 4,353.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891.42 : 7,318.74 = 2,909.75 : x
  2. Step 2: Convert to fraction form
    4,891.42/7,318.74 = 2,909.75/x
  3. Step 3: Cross multiply
    4,891.42x = 7,318.74 × 2,909.75
  4. Step 4: Simplify right side
    4,891.42x = 21,295,703.72
  5. Step 5: Solve for x
    x = 21,295,703.72/4,891.42
  6. Step 6: Final answer
    x = 4,353.69

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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.