Home / 8,579.20-11,840.64-6,220.48

Finding the Fourth Proportional to 8,579.20, 11,840.64 and 6,220.48

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Solution

The fourth proportional to 8,579.20, 11,840.64 and 6,220.48 is: 8,585.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.20 : 11,840.64 = 6,220.48 : x
  2. Step 2: Convert to fraction form
    8,579.20/11,840.64 = 6,220.48/x
  3. Step 3: Cross multiply
    8,579.20x = 11,840.64 × 6,220.48
  4. Step 4: Simplify right side
    8,579.20x = 73,654,464.31
  5. Step 5: Solve for x
    x = 73,654,464.31/8,579.20
  6. Step 6: Final answer
    x = 8,585.24

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Half scale
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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.