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Finding the Fourth Proportional to 3,395.96, 4,686.54 and 3,240.44

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Solution

The fourth proportional to 3,395.96, 4,686.54 and 3,240.44 is: 4,471.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,395.96 : 4,686.54 = 3,240.44 : x
  2. Step 2: Convert to fraction form
    3,395.96/4,686.54 = 3,240.44/x
  3. Step 3: Cross multiply
    3,395.96x = 4,686.54 × 3,240.44
  4. Step 4: Simplify right side
    3,395.96x = 15,186,451.68
  5. Step 5: Solve for x
    x = 15,186,451.68/3,395.96
  6. Step 6: Final answer
    x = 4,471.92

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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.