Home / 7,720.68-11,570.94-3,106.92

Finding the Fourth Proportional to 7,720.68, 11,570.94 and 3,106.92

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Solution

The fourth proportional to 7,720.68, 11,570.94 and 3,106.92 is: 4,656.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.68 : 11,570.94 = 3,106.92 : x
  2. Step 2: Convert to fraction form
    7,720.68/11,570.94 = 3,106.92/x
  3. Step 3: Cross multiply
    7,720.68x = 11,570.94 × 3,106.92
  4. Step 4: Simplify right side
    7,720.68x = 35,949,984.90
  5. Step 5: Solve for x
    x = 35,949,984.90/7,720.68
  6. Step 6: Final answer
    x = 4,656.32

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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.