Home / 2,718.21-4,077.84-869.18

Finding the Fourth Proportional to 2,718.21, 4,077.84 and 869.18

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Solution

The fourth proportional to 2,718.21, 4,077.84 and 869.18 is: 1,303.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.21 : 4,077.84 = 869.18 : x
  2. Step 2: Convert to fraction form
    2,718.21/4,077.84 = 869.18/x
  3. Step 3: Cross multiply
    2,718.21x = 4,077.84 × 869.18
  4. Step 4: Simplify right side
    2,718.21x = 3,544,382.78
  5. Step 5: Solve for x
    x = 3,544,382.78/2,718.21
  6. Step 6: Final answer
    x = 1,303.94

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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.