Home / 7,011.88-10,515.24-3,115.48

Finding the Fourth Proportional to 7,011.88, 10,515.24 and 3,115.48

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Solution

The fourth proportional to 7,011.88, 10,515.24 and 3,115.48 is: 4,672.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,011.88 : 10,515.24 = 3,115.48 : x
  2. Step 2: Convert to fraction form
    7,011.88/10,515.24 = 3,115.48/x
  3. Step 3: Cross multiply
    7,011.88x = 10,515.24 × 3,115.48
  4. Step 4: Simplify right side
    7,011.88x = 32,760,019.92
  5. Step 5: Solve for x
    x = 32,760,019.92/7,011.88
  6. Step 6: Final answer
    x = 4,672.07

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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.