Home / 9,201.60-12,699.84-5,221.92

Finding the Fourth Proportional to 9,201.60, 12,699.84 and 5,221.92

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Solution

The fourth proportional to 9,201.60, 12,699.84 and 5,221.92 is: 7,207.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,201.60 : 12,699.84 = 5,221.92 : x
  2. Step 2: Convert to fraction form
    9,201.60/12,699.84 = 5,221.92/x
  3. Step 3: Cross multiply
    9,201.60x = 12,699.84 × 5,221.92
  4. Step 4: Simplify right side
    9,201.60x = 66,317,548.49
  5. Step 5: Solve for x
    x = 66,317,548.49/9,201.60
  6. Step 6: Final answer
    x = 7,207.18

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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.