Home / 8,177.09-11,280.89-6,401.57

Finding the Fourth Proportional to 8,177.09, 11,280.89 and 6,401.57

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Solution

The fourth proportional to 8,177.09, 11,280.89 and 6,401.57 is: 8,831.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,177.09 : 11,280.89 = 6,401.57 : x
  2. Step 2: Convert to fraction form
    8,177.09/11,280.89 = 6,401.57/x
  3. Step 3: Cross multiply
    8,177.09x = 11,280.89 × 6,401.57
  4. Step 4: Simplify right side
    8,177.09x = 72,215,374.99
  5. Step 5: Solve for x
    x = 72,215,374.99/8,177.09
  6. Step 6: Final answer
    x = 8,831.43

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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.