Home / 3,136.30-4,326.31-2,819.18

Finding the Fourth Proportional to 3,136.30, 4,326.31 and 2,819.18

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Solution

The fourth proportional to 3,136.30, 4,326.31 and 2,819.18 is: 3,888.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.30 : 4,326.31 = 2,819.18 : x
  2. Step 2: Convert to fraction form
    3,136.30/4,326.31 = 2,819.18/x
  3. Step 3: Cross multiply
    3,136.30x = 4,326.31 × 2,819.18
  4. Step 4: Simplify right side
    3,136.30x = 12,196,646.63
  5. Step 5: Solve for x
    x = 12,196,646.63/3,136.30
  6. Step 6: Final answer
    x = 3,888.86

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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.