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Finding the Fourth Proportional to 2,642.59, 3,961.02 and 1,718.81

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Solution

The fourth proportional to 2,642.59, 3,961.02 and 1,718.81 is: 2,576.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.59 : 3,961.02 = 1,718.81 : x
  2. Step 2: Convert to fraction form
    2,642.59/3,961.02 = 1,718.81/x
  3. Step 3: Cross multiply
    2,642.59x = 3,961.02 × 1,718.81
  4. Step 4: Simplify right side
    2,642.59x = 6,808,220.98
  5. Step 5: Solve for x
    x = 6,808,220.98/2,642.59
  6. Step 6: Final answer
    x = 2,576.35

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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.