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Finding the Fourth Proportional to 2,718.01, 4,076.91 and 869.07

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Solution

The fourth proportional to 2,718.01, 4,076.91 and 869.07 is: 1,303.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.01 : 4,076.91 = 869.07 : x
  2. Step 2: Convert to fraction form
    2,718.01/4,076.91 = 869.07/x
  3. Step 3: Cross multiply
    2,718.01x = 4,076.91 × 869.07
  4. Step 4: Simplify right side
    2,718.01x = 3,543,120.17
  5. Step 5: Solve for x
    x = 3,543,120.17/2,718.01
  6. Step 6: Final answer
    x = 1,303.57

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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.