Home / 7,761.47-11,643.68-3,080.54

Finding the Fourth Proportional to 7,761.47, 11,643.68 and 3,080.54

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Solution

The fourth proportional to 7,761.47, 11,643.68 and 3,080.54 is: 4,621.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,761.47 : 11,643.68 = 3,080.54 : x
  2. Step 2: Convert to fraction form
    7,761.47/11,643.68 = 3,080.54/x
  3. Step 3: Cross multiply
    7,761.47x = 11,643.68 × 3,080.54
  4. Step 4: Simplify right side
    7,761.47x = 35,868,858.80
  5. Step 5: Solve for x
    x = 35,868,858.80/7,761.47
  6. Step 6: Final answer
    x = 4,621.40

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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.