Home / 8,622.28-12,936.54-4,242.81

Finding the Fourth Proportional to 8,622.28, 12,936.54 and 4,242.81

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Solution

The fourth proportional to 8,622.28, 12,936.54 and 4,242.81 is: 6,365.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.28 : 12,936.54 = 4,242.81 : x
  2. Step 2: Convert to fraction form
    8,622.28/12,936.54 = 4,242.81/x
  3. Step 3: Cross multiply
    8,622.28x = 12,936.54 × 4,242.81
  4. Step 4: Simplify right side
    8,622.28x = 54,887,345.70
  5. Step 5: Solve for x
    x = 54,887,345.70/8,622.28
  6. Step 6: Final answer
    x = 6,365.76

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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.