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Finding the Fourth Proportional to 3,393.93, 4,689.45 and 2,447.85

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Solution

The fourth proportional to 3,393.93, 4,689.45 and 2,447.85 is: 3,382.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.93 : 4,689.45 = 2,447.85 : x
  2. Step 2: Convert to fraction form
    3,393.93/4,689.45 = 2,447.85/x
  3. Step 3: Cross multiply
    3,393.93x = 4,689.45 × 2,447.85
  4. Step 4: Simplify right side
    3,393.93x = 11,479,070.18
  5. Step 5: Solve for x
    x = 11,479,070.18/3,393.93
  6. Step 6: Final answer
    x = 3,382.24

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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.