Home / 8,828.22-12,186.81-5,645.70

Finding the Fourth Proportional to 8,828.22, 12,186.81 and 5,645.70

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Solution

The fourth proportional to 8,828.22, 12,186.81 and 5,645.70 is: 7,793.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,828.22 : 12,186.81 = 5,645.70 : x
  2. Step 2: Convert to fraction form
    8,828.22/12,186.81 = 5,645.70/x
  3. Step 3: Cross multiply
    8,828.22x = 12,186.81 × 5,645.70
  4. Step 4: Simplify right side
    8,828.22x = 68,803,073.22
  5. Step 5: Solve for x
    x = 68,803,073.22/8,828.22
  6. Step 6: Final answer
    x = 7,793.54

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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.