Home / 7,122.96-10,686.60-3,424.14

Finding the Fourth Proportional to 7,122.96, 10,686.60 and 3,424.14

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Solution

The fourth proportional to 7,122.96, 10,686.60 and 3,424.14 is: 5,137.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.96 : 10,686.60 = 3,424.14 : x
  2. Step 2: Convert to fraction form
    7,122.96/10,686.60 = 3,424.14/x
  3. Step 3: Cross multiply
    7,122.96x = 10,686.60 × 3,424.14
  4. Step 4: Simplify right side
    7,122.96x = 36,592,414.52
  5. Step 5: Solve for x
    x = 36,592,414.52/7,122.96
  6. Step 6: Final answer
    x = 5,137.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.