Home / 3,047.30-4,205.22-1,720.91

Finding the Fourth Proportional to 3,047.30, 4,205.22 and 1,720.91

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Solution

The fourth proportional to 3,047.30, 4,205.22 and 1,720.91 is: 2,374.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,047.30 : 4,205.22 = 1,720.91 : x
  2. Step 2: Convert to fraction form
    3,047.30/4,205.22 = 1,720.91/x
  3. Step 3: Cross multiply
    3,047.30x = 4,205.22 × 1,720.91
  4. Step 4: Simplify right side
    3,047.30x = 7,236,805.15
  5. Step 5: Solve for x
    x = 7,236,805.15/3,047.30
  6. Step 6: Final answer
    x = 2,374.83

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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.