Home / 8,161.10-11,246.99-5,638.70

Finding the Fourth Proportional to 8,161.10, 11,246.99 and 5,638.70

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Solution

The fourth proportional to 8,161.10, 11,246.99 and 5,638.70 is: 7,770.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,161.10 : 11,246.99 = 5,638.70 : x
  2. Step 2: Convert to fraction form
    8,161.10/11,246.99 = 5,638.70/x
  3. Step 3: Cross multiply
    8,161.10x = 11,246.99 × 5,638.70
  4. Step 4: Simplify right side
    8,161.10x = 63,418,410.41
  5. Step 5: Solve for x
    x = 63,418,410.41/8,161.10
  6. Step 6: Final answer
    x = 7,770.82

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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.