Home / 3,415.70-5,118.93-2,486.90

Finding the Fourth Proportional to 3,415.70, 5,118.93 and 2,486.90

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Solution

The fourth proportional to 3,415.70, 5,118.93 and 2,486.90 is: 3,726.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.70 : 5,118.93 = 2,486.90 : x
  2. Step 2: Convert to fraction form
    3,415.70/5,118.93 = 2,486.90/x
  3. Step 3: Cross multiply
    3,415.70x = 5,118.93 × 2,486.90
  4. Step 4: Simplify right side
    3,415.70x = 12,730,267.02
  5. Step 5: Solve for x
    x = 12,730,267.02/3,415.70
  6. Step 6: Final answer
    x = 3,726.99

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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.