Home / 8,128.66-11,217.54-4,402.66

Finding the Fourth Proportional to 8,128.66, 11,217.54 and 4,402.66

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Solution

The fourth proportional to 8,128.66, 11,217.54 and 4,402.66 is: 6,075.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.66 : 11,217.54 = 4,402.66 : x
  2. Step 2: Convert to fraction form
    8,128.66/11,217.54 = 4,402.66/x
  3. Step 3: Cross multiply
    8,128.66x = 11,217.54 × 4,402.66
  4. Step 4: Simplify right side
    8,128.66x = 49,387,014.66
  5. Step 5: Solve for x
    x = 49,387,014.66/8,128.66
  6. Step 6: Final answer
    x = 6,075.66

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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.