Home / 8,165.64-12,243.06-4,272.78

Finding the Fourth Proportional to 8,165.64, 12,243.06 and 4,272.78

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Solution

The fourth proportional to 8,165.64, 12,243.06 and 4,272.78 is: 6,406.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,165.64 : 12,243.06 = 4,272.78 : x
  2. Step 2: Convert to fraction form
    8,165.64/12,243.06 = 4,272.78/x
  3. Step 3: Cross multiply
    8,165.64x = 12,243.06 × 4,272.78
  4. Step 4: Simplify right side
    8,165.64x = 52,311,901.91
  5. Step 5: Solve for x
    x = 52,311,901.91/8,165.64
  6. Step 6: Final answer
    x = 6,406.34

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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.