Home / 8,910.12-13,299.36-7,859.52

Finding the Fourth Proportional to 8,910.12, 13,299.36 and 7,859.52

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Solution

The fourth proportional to 8,910.12, 13,299.36 and 7,859.52 is: 11,731.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,910.12 : 13,299.36 = 7,859.52 : x
  2. Step 2: Convert to fraction form
    8,910.12/13,299.36 = 7,859.52/x
  3. Step 3: Cross multiply
    8,910.12x = 13,299.36 × 7,859.52
  4. Step 4: Simplify right side
    8,910.12x = 104,526,585.91
  5. Step 5: Solve for x
    x = 104,526,585.91/8,910.12
  6. Step 6: Final answer
    x = 11,731.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.