Home / 5,528.81-7,629.68-3,138.76

Finding the Fourth Proportional to 5,528.81, 7,629.68 and 3,138.76

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Solution

The fourth proportional to 5,528.81, 7,629.68 and 3,138.76 is: 4,331.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,528.81 : 7,629.68 = 3,138.76 : x
  2. Step 2: Convert to fraction form
    5,528.81/7,629.68 = 3,138.76/x
  3. Step 3: Cross multiply
    5,528.81x = 7,629.68 × 3,138.76
  4. Step 4: Simplify right side
    5,528.81x = 23,947,680.55
  5. Step 5: Solve for x
    x = 23,947,680.55/5,528.81
  6. Step 6: Final answer
    x = 4,331.44

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Half scale
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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.