Home / 7,680.06-11,520.08-2,415.53

Finding the Fourth Proportional to 7,680.06, 11,520.08 and 2,415.53

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Solution

The fourth proportional to 7,680.06, 11,520.08 and 2,415.53 is: 3,623.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.06 : 11,520.08 = 2,415.53 : x
  2. Step 2: Convert to fraction form
    7,680.06/11,520.08 = 2,415.53/x
  3. Step 3: Cross multiply
    7,680.06x = 11,520.08 × 2,415.53
  4. Step 4: Simplify right side
    7,680.06x = 27,827,147.62
  5. Step 5: Solve for x
    x = 27,827,147.62/7,680.06
  6. Step 6: Final answer
    x = 3,623.30

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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.