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Finding the Fourth Proportional to 4,886.88, 6,743.81 and 2,648.72

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Solution

The fourth proportional to 4,886.88, 6,743.81 and 2,648.72 is: 3,655.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,886.88 : 6,743.81 = 2,648.72 : x
  2. Step 2: Convert to fraction form
    4,886.88/6,743.81 = 2,648.72/x
  3. Step 3: Cross multiply
    4,886.88x = 6,743.81 × 2,648.72
  4. Step 4: Simplify right side
    4,886.88x = 17,862,437.33
  5. Step 5: Solve for x
    x = 17,862,437.33/4,886.88
  6. Step 6: Final answer
    x = 3,655.18

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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.