Home / 5,221.12-7,820.64-3,569.92

Finding the Fourth Proportional to 5,221.12, 7,820.64 and 3,569.92

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Solution

The fourth proportional to 5,221.12, 7,820.64 and 3,569.92 is: 5,347.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.12 : 7,820.64 = 3,569.92 : x
  2. Step 2: Convert to fraction form
    5,221.12/7,820.64 = 3,569.92/x
  3. Step 3: Cross multiply
    5,221.12x = 7,820.64 × 3,569.92
  4. Step 4: Simplify right side
    5,221.12x = 27,919,059.15
  5. Step 5: Solve for x
    x = 27,919,059.15/5,221.12
  6. Step 6: Final answer
    x = 5,347.33

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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.