Home / 6,111.20-8,434.14-4,222.20

Finding the Fourth Proportional to 6,111.20, 8,434.14 and 4,222.20

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Solution

The fourth proportional to 6,111.20, 8,434.14 and 4,222.20 is: 5,827.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,111.20 : 8,434.14 = 4,222.20 : x
  2. Step 2: Convert to fraction form
    6,111.20/8,434.14 = 4,222.20/x
  3. Step 3: Cross multiply
    6,111.20x = 8,434.14 × 4,222.20
  4. Step 4: Simplify right side
    6,111.20x = 35,610,625.91
  5. Step 5: Solve for x
    x = 35,610,625.91/6,111.20
  6. Step 6: Final answer
    x = 5,827.11

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Half scale
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Double scale
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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.