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Finding the Fourth Proportional to 3,410.76, 5,113.93 and 1,330.97

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Solution

The fourth proportional to 3,410.76, 5,113.93 and 1,330.97 is: 1,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,410.76 : 5,113.93 = 1,330.97 : x
  2. Step 2: Convert to fraction form
    3,410.76/5,113.93 = 1,330.97/x
  3. Step 3: Cross multiply
    3,410.76x = 5,113.93 × 1,330.97
  4. Step 4: Simplify right side
    3,410.76x = 6,806,493.54
  5. Step 5: Solve for x
    x = 6,806,493.54/3,410.76
  6. Step 6: Final answer
    x = 1,995.60

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1.5x scale

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.