Home / 7,830.25-11,742.66-3,148.87

Finding the Fourth Proportional to 7,830.25, 11,742.66 and 3,148.87

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Solution

The fourth proportional to 7,830.25, 11,742.66 and 3,148.87 is: 4,722.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,830.25 : 11,742.66 = 3,148.87 : x
  2. Step 2: Convert to fraction form
    7,830.25/11,742.66 = 3,148.87/x
  3. Step 3: Cross multiply
    7,830.25x = 11,742.66 × 3,148.87
  4. Step 4: Simplify right side
    7,830.25x = 36,976,109.79
  5. Step 5: Solve for x
    x = 36,976,109.79/7,830.25
  6. Step 6: Final answer
    x = 4,722.21

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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.