Home / 8,438.07-11,639.97-5,078.88

Finding the Fourth Proportional to 8,438.07, 11,639.97 and 5,078.88

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Solution

The fourth proportional to 8,438.07, 11,639.97 and 5,078.88 is: 7,006.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.07 : 11,639.97 = 5,078.88 : x
  2. Step 2: Convert to fraction form
    8,438.07/11,639.97 = 5,078.88/x
  3. Step 3: Cross multiply
    8,438.07x = 11,639.97 × 5,078.88
  4. Step 4: Simplify right side
    8,438.07x = 59,118,010.83
  5. Step 5: Solve for x
    x = 59,118,010.83/8,438.07
  6. Step 6: Final answer
    x = 7,006.11

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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.