Home / 7,680.52-11,522.40-2,486.80

Finding the Fourth Proportional to 7,680.52, 11,522.40 and 2,486.80

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Solution

The fourth proportional to 7,680.52, 11,522.40 and 2,486.80 is: 3,730.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.52 : 11,522.40 = 2,486.80 : x
  2. Step 2: Convert to fraction form
    7,680.52/11,522.40 = 2,486.80/x
  3. Step 3: Cross multiply
    7,680.52x = 11,522.40 × 2,486.80
  4. Step 4: Simplify right side
    7,680.52x = 28,653,904.32
  5. Step 5: Solve for x
    x = 28,653,904.32/7,680.52
  6. Step 6: Final answer
    x = 3,730.72

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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.