Home / 4,415.78-6,613.59-2,108.90

Finding the Fourth Proportional to 4,415.78, 6,613.59 and 2,108.90

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Solution

The fourth proportional to 4,415.78, 6,613.59 and 2,108.90 is: 3,158.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,415.78 : 6,613.59 = 2,108.90 : x
  2. Step 2: Convert to fraction form
    4,415.78/6,613.59 = 2,108.90/x
  3. Step 3: Cross multiply
    4,415.78x = 6,613.59 × 2,108.90
  4. Step 4: Simplify right side
    4,415.78x = 13,947,399.95
  5. Step 5: Solve for x
    x = 13,947,399.95/4,415.78
  6. Step 6: Final answer
    x = 3,158.54

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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.