Home / 8,272.66-11,415.48-4,687.78

Finding the Fourth Proportional to 8,272.66, 11,415.48 and 4,687.78

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Solution

The fourth proportional to 8,272.66, 11,415.48 and 4,687.78 is: 6,468.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,272.66 : 11,415.48 = 4,687.78 : x
  2. Step 2: Convert to fraction form
    8,272.66/11,415.48 = 4,687.78/x
  3. Step 3: Cross multiply
    8,272.66x = 11,415.48 × 4,687.78
  4. Step 4: Simplify right side
    8,272.66x = 53,513,258.83
  5. Step 5: Solve for x
    x = 53,513,258.83/8,272.66
  6. Step 6: Final answer
    x = 6,468.69

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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.