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Finding the Fourth Proportional to 4,885.39, 6,741.82 and 2,647.20

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Solution

The fourth proportional to 4,885.39, 6,741.82 and 2,647.20 is: 3,653.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,885.39 : 6,741.82 = 2,647.20 : x
  2. Step 2: Convert to fraction form
    4,885.39/6,741.82 = 2,647.20/x
  3. Step 3: Cross multiply
    4,885.39x = 6,741.82 × 2,647.20
  4. Step 4: Simplify right side
    4,885.39x = 17,846,945.90
  5. Step 5: Solve for x
    x = 17,846,945.90/4,885.39
  6. Step 6: Final answer
    x = 3,653.13

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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.