Home / 5,121.05-7,064.64-3,328.40

Finding the Fourth Proportional to 5,121.05, 7,064.64 and 3,328.40

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Solution

The fourth proportional to 5,121.05, 7,064.64 and 3,328.40 is: 4,591.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.05 : 7,064.64 = 3,328.40 : x
  2. Step 2: Convert to fraction form
    5,121.05/7,064.64 = 3,328.40/x
  3. Step 3: Cross multiply
    5,121.05x = 7,064.64 × 3,328.40
  4. Step 4: Simplify right side
    5,121.05x = 23,513,912.45
  5. Step 5: Solve for x
    x = 23,513,912.45/5,121.05
  6. Step 6: Final answer
    x = 4,591.62

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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.