Home / 8,449.60-11,657.88-4,912.16

Finding the Fourth Proportional to 8,449.60, 11,657.88 and 4,912.16

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Solution

The fourth proportional to 8,449.60, 11,657.88 and 4,912.16 is: 6,777.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,449.60 : 11,657.88 = 4,912.16 : x
  2. Step 2: Convert to fraction form
    8,449.60/11,657.88 = 4,912.16/x
  3. Step 3: Cross multiply
    8,449.60x = 11,657.88 × 4,912.16
  4. Step 4: Simplify right side
    8,449.60x = 57,265,371.82
  5. Step 5: Solve for x
    x = 57,265,371.82/8,449.60
  6. Step 6: Final answer
    x = 6,777.29

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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.