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Finding the Fourth Proportional to 3,953.66, 5,921.58 and 3,069.12

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Solution

The fourth proportional to 3,953.66, 5,921.58 and 3,069.12 is: 4,596.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,953.66 : 5,921.58 = 3,069.12 : x
  2. Step 2: Convert to fraction form
    3,953.66/5,921.58 = 3,069.12/x
  3. Step 3: Cross multiply
    3,953.66x = 5,921.58 × 3,069.12
  4. Step 4: Simplify right side
    3,953.66x = 18,174,039.61
  5. Step 5: Solve for x
    x = 18,174,039.61/3,953.66
  6. Step 6: Final answer
    x = 4,596.76

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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.