Home / 7,989.60-11,028.24-5,337.60

Finding the Fourth Proportional to 7,989.60, 11,028.24 and 5,337.60

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Solution

The fourth proportional to 7,989.60, 11,028.24 and 5,337.60 is: 7,367.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.60 : 11,028.24 = 5,337.60 : x
  2. Step 2: Convert to fraction form
    7,989.60/11,028.24 = 5,337.60/x
  3. Step 3: Cross multiply
    7,989.60x = 11,028.24 × 5,337.60
  4. Step 4: Simplify right side
    7,989.60x = 58,864,333.82
  5. Step 5: Solve for x
    x = 58,864,333.82/7,989.60
  6. Step 6: Final answer
    x = 7,367.62

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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.