Home / 7,348.11-10,140.39-3,990.93

Finding the Fourth Proportional to 7,348.11, 10,140.39 and 3,990.93

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Solution

The fourth proportional to 7,348.11, 10,140.39 and 3,990.93 is: 5,507.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,348.11 : 10,140.39 = 3,990.93 : x
  2. Step 2: Convert to fraction form
    7,348.11/10,140.39 = 3,990.93/x
  3. Step 3: Cross multiply
    7,348.11x = 10,140.39 × 3,990.93
  4. Step 4: Simplify right side
    7,348.11x = 40,469,586.66
  5. Step 5: Solve for x
    x = 40,469,586.66/7,348.11
  6. Step 6: Final answer
    x = 5,507.48

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Double scale
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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.