Home / 3,160.77-4,741.24-820.72

Finding the Fourth Proportional to 3,160.77, 4,741.24 and 820.72

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Solution

The fourth proportional to 3,160.77, 4,741.24 and 820.72 is: 1,231.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.77 : 4,741.24 = 820.72 : x
  2. Step 2: Convert to fraction form
    3,160.77/4,741.24 = 820.72/x
  3. Step 3: Cross multiply
    3,160.77x = 4,741.24 × 820.72
  4. Step 4: Simplify right side
    3,160.77x = 3,891,228.08
  5. Step 5: Solve for x
    x = 3,891,228.08/3,160.77
  6. Step 6: Final answer
    x = 1,231.10

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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.