Home / 7,961.67-10,987.38-4,425.21

Finding the Fourth Proportional to 7,961.67, 10,987.38 and 4,425.21

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Solution

The fourth proportional to 7,961.67, 10,987.38 and 4,425.21 is: 6,106.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.67 : 10,987.38 = 4,425.21 : x
  2. Step 2: Convert to fraction form
    7,961.67/10,987.38 = 4,425.21/x
  3. Step 3: Cross multiply
    7,961.67x = 10,987.38 × 4,425.21
  4. Step 4: Simplify right side
    7,961.67x = 48,621,463.85
  5. Step 5: Solve for x
    x = 48,621,463.85/7,961.67
  6. Step 6: Final answer
    x = 6,106.94

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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.