Home / 3,122.20-4,308.69-1,705.91

Finding the Fourth Proportional to 3,122.20, 4,308.69 and 1,705.91

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Solution

The fourth proportional to 3,122.20, 4,308.69 and 1,705.91 is: 2,354.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.20 : 4,308.69 = 1,705.91 : x
  2. Step 2: Convert to fraction form
    3,122.20/4,308.69 = 1,705.91/x
  3. Step 3: Cross multiply
    3,122.20x = 4,308.69 × 1,705.91
  4. Step 4: Simplify right side
    3,122.20x = 7,350,246.45
  5. Step 5: Solve for x
    x = 7,350,246.45/3,122.20
  6. Step 6: Final answer
    x = 2,354.19

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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.