Home / 8,620.64-11,892.48-5,260.80

Finding the Fourth Proportional to 8,620.64, 11,892.48 and 5,260.80

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Solution

The fourth proportional to 8,620.64, 11,892.48 and 5,260.80 is: 7,257.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.64 : 11,892.48 = 5,260.80 : x
  2. Step 2: Convert to fraction form
    8,620.64/11,892.48 = 5,260.80/x
  3. Step 3: Cross multiply
    8,620.64x = 11,892.48 × 5,260.80
  4. Step 4: Simplify right side
    8,620.64x = 62,563,958.78
  5. Step 5: Solve for x
    x = 62,563,958.78/8,620.64
  6. Step 6: Final answer
    x = 7,257.46

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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.