Home / 7,705.20-11,541.60-5,080.80

Finding the Fourth Proportional to 7,705.20, 11,541.60 and 5,080.80

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Solution

The fourth proportional to 7,705.20, 11,541.60 and 5,080.80 is: 7,610.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,705.20 : 11,541.60 = 5,080.80 : x
  2. Step 2: Convert to fraction form
    7,705.20/11,541.60 = 5,080.80/x
  3. Step 3: Cross multiply
    7,705.20x = 11,541.60 × 5,080.80
  4. Step 4: Simplify right side
    7,705.20x = 58,640,561.28
  5. Step 5: Solve for x
    x = 58,640,561.28/7,705.20
  6. Step 6: Final answer
    x = 7,610.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.