Home / 7,820.21-10,791.31-4,836.12

Finding the Fourth Proportional to 7,820.21, 10,791.31 and 4,836.12

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Solution

The fourth proportional to 7,820.21, 10,791.31 and 4,836.12 is: 6,673.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.21 : 10,791.31 = 4,836.12 : x
  2. Step 2: Convert to fraction form
    7,820.21/10,791.31 = 4,836.12/x
  3. Step 3: Cross multiply
    7,820.21x = 10,791.31 × 4,836.12
  4. Step 4: Simplify right side
    7,820.21x = 52,188,070.12
  5. Step 5: Solve for x
    x = 52,188,070.12/7,820.21
  6. Step 6: Final answer
    x = 6,673.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.