Home / 3,106.86-4,655.90-1,720.83

Finding the Fourth Proportional to 3,106.86, 4,655.90 and 1,720.83

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Solution

The fourth proportional to 3,106.86, 4,655.90 and 1,720.83 is: 2,578.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,106.86 : 4,655.90 = 1,720.83 : x
  2. Step 2: Convert to fraction form
    3,106.86/4,655.90 = 1,720.83/x
  3. Step 3: Cross multiply
    3,106.86x = 4,655.90 × 1,720.83
  4. Step 4: Simplify right side
    3,106.86x = 8,012,003.79
  5. Step 5: Solve for x
    x = 8,012,003.79/3,106.86
  6. Step 6: Final answer
    x = 2,578.81

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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.