Home / 7,851.68-11,777.60-2,587.04

Finding the Fourth Proportional to 7,851.68, 11,777.60 and 2,587.04

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Solution

The fourth proportional to 7,851.68, 11,777.60 and 2,587.04 is: 3,880.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.68 : 11,777.60 = 2,587.04 : x
  2. Step 2: Convert to fraction form
    7,851.68/11,777.60 = 2,587.04/x
  3. Step 3: Cross multiply
    7,851.68x = 11,777.60 × 2,587.04
  4. Step 4: Simplify right side
    7,851.68x = 30,469,122.30
  5. Step 5: Solve for x
    x = 30,469,122.30/7,851.68
  6. Step 6: Final answer
    x = 3,880.59

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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.