Home / 7,144.72-10,711.26-2,987.80

Finding the Fourth Proportional to 7,144.72, 10,711.26 and 2,987.80

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Solution

The fourth proportional to 7,144.72, 10,711.26 and 2,987.80 is: 4,479.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.72 : 10,711.26 = 2,987.80 : x
  2. Step 2: Convert to fraction form
    7,144.72/10,711.26 = 2,987.80/x
  3. Step 3: Cross multiply
    7,144.72x = 10,711.26 × 2,987.80
  4. Step 4: Simplify right side
    7,144.72x = 32,003,102.63
  5. Step 5: Solve for x
    x = 32,003,102.63/7,144.72
  6. Step 6: Final answer
    x = 4,479.27

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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.