Home / 5,815.64-8,723.46-2,118.08

Finding the Fourth Proportional to 5,815.64, 8,723.46 and 2,118.08

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Solution

The fourth proportional to 5,815.64, 8,723.46 and 2,118.08 is: 3,177.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.64 : 8,723.46 = 2,118.08 : x
  2. Step 2: Convert to fraction form
    5,815.64/8,723.46 = 2,118.08/x
  3. Step 3: Cross multiply
    5,815.64x = 8,723.46 × 2,118.08
  4. Step 4: Simplify right side
    5,815.64x = 18,476,986.16
  5. Step 5: Solve for x
    x = 18,476,986.16/5,815.64
  6. Step 6: Final answer
    x = 3,177.12

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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.