Home / 3,317.40-4,976.10-2,086.20

Finding the Fourth Proportional to 3,317.40, 4,976.10 and 2,086.20

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Solution

The fourth proportional to 3,317.40, 4,976.10 and 2,086.20 is: 3,129.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,317.40 : 4,976.10 = 2,086.20 : x
  2. Step 2: Convert to fraction form
    3,317.40/4,976.10 = 2,086.20/x
  3. Step 3: Cross multiply
    3,317.40x = 4,976.10 × 2,086.20
  4. Step 4: Simplify right side
    3,317.40x = 10,381,139.82
  5. Step 5: Solve for x
    x = 10,381,139.82/3,317.40
  6. Step 6: Final answer
    x = 3,129.30

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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.