Home / 5,625.78-8,438.91-2,115.45

Finding the Fourth Proportional to 5,625.78, 8,438.91 and 2,115.45

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Solution

The fourth proportional to 5,625.78, 8,438.91 and 2,115.45 is: 3,173.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,625.78 : 8,438.91 = 2,115.45 : x
  2. Step 2: Convert to fraction form
    5,625.78/8,438.91 = 2,115.45/x
  3. Step 3: Cross multiply
    5,625.78x = 8,438.91 × 2,115.45
  4. Step 4: Simplify right side
    5,625.78x = 17,852,092.16
  5. Step 5: Solve for x
    x = 17,852,092.16/5,625.78
  6. Step 6: Final answer
    x = 3,173.27

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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.