Home / 8,330.12-11,488.12-6,911.56

Finding the Fourth Proportional to 8,330.12, 11,488.12 and 6,911.56

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Solution

The fourth proportional to 8,330.12, 11,488.12 and 6,911.56 is: 9,531.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,330.12 : 11,488.12 = 6,911.56 : x
  2. Step 2: Convert to fraction form
    8,330.12/11,488.12 = 6,911.56/x
  3. Step 3: Cross multiply
    8,330.12x = 11,488.12 × 6,911.56
  4. Step 4: Simplify right side
    8,330.12x = 79,400,847.19
  5. Step 5: Solve for x
    x = 79,400,847.19/8,330.12
  6. Step 6: Final answer
    x = 9,531.78

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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.