Home / 7,982.64-12,020.40-5,917.32

Finding the Fourth Proportional to 7,982.64, 12,020.40 and 5,917.32

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Solution

The fourth proportional to 7,982.64, 12,020.40 and 5,917.32 is: 8,910.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,982.64 : 12,020.40 = 5,917.32 : x
  2. Step 2: Convert to fraction form
    7,982.64/12,020.40 = 5,917.32/x
  3. Step 3: Cross multiply
    7,982.64x = 12,020.40 × 5,917.32
  4. Step 4: Simplify right side
    7,982.64x = 71,128,553.33
  5. Step 5: Solve for x
    x = 71,128,553.33/7,982.64
  6. Step 6: Final answer
    x = 8,910.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.