Home / 8,128.13-11,216.84-4,402.13

Finding the Fourth Proportional to 8,128.13, 11,216.84 and 4,402.13

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Solution

The fourth proportional to 8,128.13, 11,216.84 and 4,402.13 is: 6,074.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.13 : 11,216.84 = 4,402.13 : x
  2. Step 2: Convert to fraction form
    8,128.13/11,216.84 = 4,402.13/x
  3. Step 3: Cross multiply
    8,128.13x = 11,216.84 × 4,402.13
  4. Step 4: Simplify right side
    8,128.13x = 49,377,909.77
  5. Step 5: Solve for x
    x = 49,377,909.77/8,128.13
  6. Step 6: Final answer
    x = 6,074.94

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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.