Home / 5,578.31-8,367.47-2,115.56

Finding the Fourth Proportional to 5,578.31, 8,367.47 and 2,115.56

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Solution

The fourth proportional to 5,578.31, 8,367.47 and 2,115.56 is: 3,173.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,578.31 : 8,367.47 = 2,115.56 : x
  2. Step 2: Convert to fraction form
    5,578.31/8,367.47 = 2,115.56/x
  3. Step 3: Cross multiply
    5,578.31x = 8,367.47 × 2,115.56
  4. Step 4: Simplify right side
    5,578.31x = 17,701,903.11
  5. Step 5: Solve for x
    x = 17,701,903.11/5,578.31
  6. Step 6: Final answer
    x = 3,173.34

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1.5x scale

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.