Home / 7,139.53-9,853.01-3,996.73

Finding the Fourth Proportional to 7,139.53, 9,853.01 and 3,996.73

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Solution

The fourth proportional to 7,139.53, 9,853.01 and 3,996.73 is: 5,515.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.53 : 9,853.01 = 3,996.73 : x
  2. Step 2: Convert to fraction form
    7,139.53/9,853.01 = 3,996.73/x
  3. Step 3: Cross multiply
    7,139.53x = 9,853.01 × 3,996.73
  4. Step 4: Simplify right side
    7,139.53x = 39,379,820.66
  5. Step 5: Solve for x
    x = 39,379,820.66/7,139.53
  6. Step 6: Final answer
    x = 5,515.74

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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.