Home / 8,124.59-11,208.29-7,126.80

Finding the Fourth Proportional to 8,124.59, 11,208.29 and 7,126.80

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Solution

The fourth proportional to 8,124.59, 11,208.29 and 7,126.80 is: 9,831.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,124.59 : 11,208.29 = 7,126.80 : x
  2. Step 2: Convert to fraction form
    8,124.59/11,208.29 = 7,126.80/x
  3. Step 3: Cross multiply
    8,124.59x = 11,208.29 × 7,126.80
  4. Step 4: Simplify right side
    8,124.59x = 79,879,205.54
  5. Step 5: Solve for x
    x = 79,879,205.54/8,124.59
  6. Step 6: Final answer
    x = 9,831.79

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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.