Home / 3,415.85-5,111.59-2,479.88

Finding the Fourth Proportional to 3,415.85, 5,111.59 and 2,479.88

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Solution

The fourth proportional to 3,415.85, 5,111.59 and 2,479.88 is: 3,710.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.85 : 5,111.59 = 2,479.88 : x
  2. Step 2: Convert to fraction form
    3,415.85/5,111.59 = 2,479.88/x
  3. Step 3: Cross multiply
    3,415.85x = 5,111.59 × 2,479.88
  4. Step 4: Simplify right side
    3,415.85x = 12,676,136.39
  5. Step 5: Solve for x
    x = 12,676,136.39/3,415.85
  6. Step 6: Final answer
    x = 3,710.97

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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.