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Finding the Fourth Proportional to 3,307.92, 4,566.56 and 2,129.64

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Solution

The fourth proportional to 3,307.92, 4,566.56 and 2,129.64 is: 2,939.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,307.92 : 4,566.56 = 2,129.64 : x
  2. Step 2: Convert to fraction form
    3,307.92/4,566.56 = 2,129.64/x
  3. Step 3: Cross multiply
    3,307.92x = 4,566.56 × 2,129.64
  4. Step 4: Simplify right side
    3,307.92x = 9,725,128.84
  5. Step 5: Solve for x
    x = 9,725,128.84/3,307.92
  6. Step 6: Final answer
    x = 2,939.95

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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.