Home / 7,790.31-11,685.56-3,629.13

Finding the Fourth Proportional to 7,790.31, 11,685.56 and 3,629.13

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Solution

The fourth proportional to 7,790.31, 11,685.56 and 3,629.13 is: 5,443.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.31 : 11,685.56 = 3,629.13 : x
  2. Step 2: Convert to fraction form
    7,790.31/11,685.56 = 3,629.13/x
  3. Step 3: Cross multiply
    7,790.31x = 11,685.56 × 3,629.13
  4. Step 4: Simplify right side
    7,790.31x = 42,408,398.22
  5. Step 5: Solve for x
    x = 42,408,398.22/7,790.31
  6. Step 6: Final answer
    x = 5,443.74

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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.