Home / 5,625.68-8,438.72-2,115.36

Finding the Fourth Proportional to 5,625.68, 8,438.72 and 2,115.36

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Solution

The fourth proportional to 5,625.68, 8,438.72 and 2,115.36 is: 3,173.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,625.68 : 8,438.72 = 2,115.36 : x
  2. Step 2: Convert to fraction form
    5,625.68/8,438.72 = 2,115.36/x
  3. Step 3: Cross multiply
    5,625.68x = 8,438.72 × 2,115.36
  4. Step 4: Simplify right side
    5,625.68x = 17,850,920.16
  5. Step 5: Solve for x
    x = 17,850,920.16/5,625.68
  6. Step 6: Final answer
    x = 3,173.12

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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.