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Finding the Fourth Proportional to 2,618.65, 3,929.26 and 1,232.13

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Solution

The fourth proportional to 2,618.65, 3,929.26 and 1,232.13 is: 1,848.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.65 : 3,929.26 = 1,232.13 : x
  2. Step 2: Convert to fraction form
    2,618.65/3,929.26 = 1,232.13/x
  3. Step 3: Cross multiply
    2,618.65x = 3,929.26 × 1,232.13
  4. Step 4: Simplify right side
    2,618.65x = 4,841,350.99
  5. Step 5: Solve for x
    x = 4,841,350.99/2,618.65
  6. Step 6: Final answer
    x = 1,848.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.