Home / 7,872.12-11,808.56-2,607.62

Finding the Fourth Proportional to 7,872.12, 11,808.56 and 2,607.62

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Solution

The fourth proportional to 7,872.12, 11,808.56 and 2,607.62 is: 3,911.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.12 : 11,808.56 = 2,607.62 : x
  2. Step 2: Convert to fraction form
    7,872.12/11,808.56 = 2,607.62/x
  3. Step 3: Cross multiply
    7,872.12x = 11,808.56 × 2,607.62
  4. Step 4: Simplify right side
    7,872.12x = 30,792,184.70
  5. Step 5: Solve for x
    x = 30,792,184.70/7,872.12
  6. Step 6: Final answer
    x = 3,911.55

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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.