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Finding the Fourth Proportional to 2,836.82, 3,915.44 and 1,642.63

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Solution

The fourth proportional to 2,836.82, 3,915.44 and 1,642.63 is: 2,267.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.82 : 3,915.44 = 1,642.63 : x
  2. Step 2: Convert to fraction form
    2,836.82/3,915.44 = 1,642.63/x
  3. Step 3: Cross multiply
    2,836.82x = 3,915.44 × 1,642.63
  4. Step 4: Simplify right side
    2,836.82x = 6,431,614.71
  5. Step 5: Solve for x
    x = 6,431,614.71/2,836.82
  6. Step 6: Final answer
    x = 2,267.19

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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.