Home / 7,830.14-11,742.30-3,148.58

Finding the Fourth Proportional to 7,830.14, 11,742.30 and 3,148.58

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Solution

The fourth proportional to 7,830.14, 11,742.30 and 3,148.58 is: 4,721.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,830.14 : 11,742.30 = 3,148.58 : x
  2. Step 2: Convert to fraction form
    7,830.14/11,742.30 = 3,148.58/x
  3. Step 3: Cross multiply
    7,830.14x = 11,742.30 × 3,148.58
  4. Step 4: Simplify right side
    7,830.14x = 36,971,512.22
  5. Step 5: Solve for x
    x = 36,971,512.22/7,830.14
  6. Step 6: Final answer
    x = 4,721.69

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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.