Home / 3,108.96-4,656.15-1,720.08

Finding the Fourth Proportional to 3,108.96, 4,656.15 and 1,720.08

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Solution

The fourth proportional to 3,108.96, 4,656.15 and 1,720.08 is: 2,576.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.96 : 4,656.15 = 1,720.08 : x
  2. Step 2: Convert to fraction form
    3,108.96/4,656.15 = 1,720.08/x
  3. Step 3: Cross multiply
    3,108.96x = 4,656.15 × 1,720.08
  4. Step 4: Simplify right side
    3,108.96x = 8,008,950.49
  5. Step 5: Solve for x
    x = 8,008,950.49/3,108.96
  6. Step 6: Final answer
    x = 2,576.09

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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.