Home / 8,694.48-11,999.40-4,919.20

Finding the Fourth Proportional to 8,694.48, 11,999.40 and 4,919.20

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Solution

The fourth proportional to 8,694.48, 11,999.40 and 4,919.20 is: 6,789.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694.48 : 11,999.40 = 4,919.20 : x
  2. Step 2: Convert to fraction form
    8,694.48/11,999.40 = 4,919.20/x
  3. Step 3: Cross multiply
    8,694.48x = 11,999.40 × 4,919.20
  4. Step 4: Simplify right side
    8,694.48x = 59,027,448.48
  5. Step 5: Solve for x
    x = 59,027,448.48/8,694.48
  6. Step 6: Final answer
    x = 6,789.07

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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.