Home / 8,814.78-13,221.69-3,620.46

Finding the Fourth Proportional to 8,814.78, 13,221.69 and 3,620.46

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Solution

The fourth proportional to 8,814.78, 13,221.69 and 3,620.46 is: 5,430.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,814.78 : 13,221.69 = 3,620.46 : x
  2. Step 2: Convert to fraction form
    8,814.78/13,221.69 = 3,620.46/x
  3. Step 3: Cross multiply
    8,814.78x = 13,221.69 × 3,620.46
  4. Step 4: Simplify right side
    8,814.78x = 47,868,599.78
  5. Step 5: Solve for x
    x = 47,868,599.78/8,814.78
  6. Step 6: Final answer
    x = 5,430.49

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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.