Home / 7,348.39-10,140.78-3,991.25

Finding the Fourth Proportional to 7,348.39, 10,140.78 and 3,991.25

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Solution

The fourth proportional to 7,348.39, 10,140.78 and 3,991.25 is: 5,507.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,348.39 : 10,140.78 = 3,991.25 : x
  2. Step 2: Convert to fraction form
    7,348.39/10,140.78 = 3,991.25/x
  3. Step 3: Cross multiply
    7,348.39x = 10,140.78 × 3,991.25
  4. Step 4: Simplify right side
    7,348.39x = 40,474,428.49
  5. Step 5: Solve for x
    x = 40,474,428.49/7,348.39
  6. Step 6: Final answer
    x = 5,507.93

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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.