Home / 8,178.79-11,286.46-4,821.54

Finding the Fourth Proportional to 8,178.79, 11,286.46 and 4,821.54

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Solution

The fourth proportional to 8,178.79, 11,286.46 and 4,821.54 is: 6,653.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.79 : 11,286.46 = 4,821.54 : x
  2. Step 2: Convert to fraction form
    8,178.79/11,286.46 = 4,821.54/x
  3. Step 3: Cross multiply
    8,178.79x = 11,286.46 × 4,821.54
  4. Step 4: Simplify right side
    8,178.79x = 54,418,134.51
  5. Step 5: Solve for x
    x = 54,418,134.51/8,178.79
  6. Step 6: Final answer
    x = 6,653.57

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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.