Home / 3,059.10-4,221.27-2,115.90

Finding the Fourth Proportional to 3,059.10, 4,221.27 and 2,115.90

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Solution

The fourth proportional to 3,059.10, 4,221.27 and 2,115.90 is: 2,919.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,059.10 : 4,221.27 = 2,115.90 : x
  2. Step 2: Convert to fraction form
    3,059.10/4,221.27 = 2,115.90/x
  3. Step 3: Cross multiply
    3,059.10x = 4,221.27 × 2,115.90
  4. Step 4: Simplify right side
    3,059.10x = 8,931,785.19
  5. Step 5: Solve for x
    x = 8,931,785.19/3,059.10
  6. Step 6: Final answer
    x = 2,919.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.