Home / 7,340.39-10,129.56-4,196.38

Finding the Fourth Proportional to 7,340.39, 10,129.56 and 4,196.38

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Solution

The fourth proportional to 7,340.39, 10,129.56 and 4,196.38 is: 5,790.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,340.39 : 10,129.56 = 4,196.38 : x
  2. Step 2: Convert to fraction form
    7,340.39/10,129.56 = 4,196.38/x
  3. Step 3: Cross multiply
    7,340.39x = 10,129.56 × 4,196.38
  4. Step 4: Simplify right side
    7,340.39x = 42,507,432.35
  5. Step 5: Solve for x
    x = 42,507,432.35/7,340.39
  6. Step 6: Final answer
    x = 5,790.90

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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.