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Finding the Fourth Proportional to 4,885.73, 6,742.29 and 2,647.65

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Solution

The fourth proportional to 4,885.73, 6,742.29 and 2,647.65 is: 3,653.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,885.73 : 6,742.29 = 2,647.65 : x
  2. Step 2: Convert to fraction form
    4,885.73/6,742.29 = 2,647.65/x
  3. Step 3: Cross multiply
    4,885.73x = 6,742.29 × 2,647.65
  4. Step 4: Simplify right side
    4,885.73x = 17,851,224.12
  5. Step 5: Solve for x
    x = 17,851,224.12/4,885.73
  6. Step 6: Final answer
    x = 3,653.75

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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.