Home / 7,680.74-11,520.75-2,415.62

Finding the Fourth Proportional to 7,680.74, 11,520.75 and 2,415.62

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Solution

The fourth proportional to 7,680.74, 11,520.75 and 2,415.62 is: 3,623.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.74 : 11,520.75 = 2,415.62 : x
  2. Step 2: Convert to fraction form
    7,680.74/11,520.75 = 2,415.62/x
  3. Step 3: Cross multiply
    7,680.74x = 11,520.75 × 2,415.62
  4. Step 4: Simplify right side
    7,680.74x = 27,829,754.12
  5. Step 5: Solve for x
    x = 27,829,754.12/7,680.74
  6. Step 6: Final answer
    x = 3,623.32

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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.