Home / 8,639.59-11,920.62-5,103.33

Finding the Fourth Proportional to 8,639.59, 11,920.62 and 5,103.33

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Solution

The fourth proportional to 8,639.59, 11,920.62 and 5,103.33 is: 7,041.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639.59 : 11,920.62 = 5,103.33 : x
  2. Step 2: Convert to fraction form
    8,639.59/11,920.62 = 5,103.33/x
  3. Step 3: Cross multiply
    8,639.59x = 11,920.62 × 5,103.33
  4. Step 4: Simplify right side
    8,639.59x = 60,834,857.66
  5. Step 5: Solve for x
    x = 60,834,857.66/8,639.59
  6. Step 6: Final answer
    x = 7,041.41

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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.