Home / 7,680.80-11,485.68-5,832.32

Finding the Fourth Proportional to 7,680.80, 11,485.68 and 5,832.32

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Solution

The fourth proportional to 7,680.80, 11,485.68 and 5,832.32 is: 8,721.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.80 : 11,485.68 = 5,832.32 : x
  2. Step 2: Convert to fraction form
    7,680.80/11,485.68 = 5,832.32/x
  3. Step 3: Cross multiply
    7,680.80x = 11,485.68 × 5,832.32
  4. Step 4: Simplify right side
    7,680.80x = 66,988,161.18
  5. Step 5: Solve for x
    x = 66,988,161.18/7,680.80
  6. Step 6: Final answer
    x = 8,721.51

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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.