Home / 8,127.09-11,217.45-5,438.61

Finding the Fourth Proportional to 8,127.09, 11,217.45 and 5,438.61

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Solution

The fourth proportional to 8,127.09, 11,217.45 and 5,438.61 is: 7,506.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.09 : 11,217.45 = 5,438.61 : x
  2. Step 2: Convert to fraction form
    8,127.09/11,217.45 = 5,438.61/x
  3. Step 3: Cross multiply
    8,127.09x = 11,217.45 × 5,438.61
  4. Step 4: Simplify right side
    8,127.09x = 61,007,335.74
  5. Step 5: Solve for x
    x = 61,007,335.74/8,127.09
  6. Step 6: Final answer
    x = 7,506.66

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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.