Home / 6,112.20-8,434.80-3,317.68

Finding the Fourth Proportional to 6,112.20, 8,434.80 and 3,317.68

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Solution

The fourth proportional to 6,112.20, 8,434.80 and 3,317.68 is: 4,578.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,112.20 : 8,434.80 = 3,317.68 : x
  2. Step 2: Convert to fraction form
    6,112.20/8,434.80 = 3,317.68/x
  3. Step 3: Cross multiply
    6,112.20x = 8,434.80 × 3,317.68
  4. Step 4: Simplify right side
    6,112.20x = 27,983,967.26
  5. Step 5: Solve for x
    x = 27,983,967.26/6,112.20
  6. Step 6: Final answer
    x = 4,578.38

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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.