Home / 8,553.45-12,831.12-3,555.28

Finding the Fourth Proportional to 8,553.45, 12,831.12 and 3,555.28

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Solution

The fourth proportional to 8,553.45, 12,831.12 and 3,555.28 is: 5,333.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,553.45 : 12,831.12 = 3,555.28 : x
  2. Step 2: Convert to fraction form
    8,553.45/12,831.12 = 3,555.28/x
  3. Step 3: Cross multiply
    8,553.45x = 12,831.12 × 3,555.28
  4. Step 4: Simplify right side
    8,553.45x = 45,618,224.31
  5. Step 5: Solve for x
    x = 45,618,224.31/8,553.45
  6. Step 6: Final answer
    x = 5,333.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.