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Finding the Fourth Proportional to 2,718.64, 4,077.69 and 744.45

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Solution

The fourth proportional to 2,718.64, 4,077.69 and 744.45 is: 1,116.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.64 : 4,077.69 = 744.45 : x
  2. Step 2: Convert to fraction form
    2,718.64/4,077.69 = 744.45/x
  3. Step 3: Cross multiply
    2,718.64x = 4,077.69 × 744.45
  4. Step 4: Simplify right side
    2,718.64x = 3,035,618.24
  5. Step 5: Solve for x
    x = 3,035,618.24/2,718.64
  6. Step 6: Final answer
    x = 1,116.59

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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.