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Finding the Fourth Proportional to 4,891.31, 6,749.82 and 2,653.15

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Solution

The fourth proportional to 4,891.31, 6,749.82 and 2,653.15 is: 3,661.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,891.31 : 6,749.82 = 2,653.15 : x
  2. Step 2: Convert to fraction form
    4,891.31/6,749.82 = 2,653.15/x
  3. Step 3: Cross multiply
    4,891.31x = 6,749.82 × 2,653.15
  4. Step 4: Simplify right side
    4,891.31x = 17,908,284.93
  5. Step 5: Solve for x
    x = 17,908,284.93/4,891.31
  6. Step 6: Final answer
    x = 3,661.25

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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.