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Finding the Fourth Proportional to 4,886.39, 6,743.20 and 2,648.20

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Solution

The fourth proportional to 4,886.39, 6,743.20 and 2,648.20 is: 3,654.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.39 : 6,743.20 = 2,648.20 : x
  2. Step 2: Convert to fraction form
    4,886.39/6,743.20 = 2,648.20/x
  3. Step 3: Cross multiply
    4,886.39x = 6,743.20 × 2,648.20
  4. Step 4: Simplify right side
    4,886.39x = 17,857,342.24
  5. Step 5: Solve for x
    x = 17,857,342.24/4,886.39
  6. Step 6: Final answer
    x = 3,654.51

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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.