Home / 8,815.54-12,161.24-5,278.06

Finding the Fourth Proportional to 8,815.54, 12,161.24 and 5,278.06

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Solution

The fourth proportional to 8,815.54, 12,161.24 and 5,278.06 is: 7,281.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.54 : 12,161.24 = 5,278.06 : x
  2. Step 2: Convert to fraction form
    8,815.54/12,161.24 = 5,278.06/x
  3. Step 3: Cross multiply
    8,815.54x = 12,161.24 × 5,278.06
  4. Step 4: Simplify right side
    8,815.54x = 64,187,754.39
  5. Step 5: Solve for x
    x = 64,187,754.39/8,815.54
  6. Step 6: Final answer
    x = 7,281.21

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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.