Home / 6,278.10-8,661.09-3,921.30

Finding the Fourth Proportional to 6,278.10, 8,661.09 and 3,921.30

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Solution

The fourth proportional to 6,278.10, 8,661.09 and 3,921.30 is: 5,409.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,278.10 : 8,661.09 = 3,921.30 : x
  2. Step 2: Convert to fraction form
    6,278.10/8,661.09 = 3,921.30/x
  3. Step 3: Cross multiply
    6,278.10x = 8,661.09 × 3,921.30
  4. Step 4: Simplify right side
    6,278.10x = 33,962,732.22
  5. Step 5: Solve for x
    x = 33,962,732.22/6,278.10
  6. Step 6: Final answer
    x = 5,409.72

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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.