Home / 7,212.08-10,791.12-5,136.88

Finding the Fourth Proportional to 7,212.08, 10,791.12 and 5,136.88

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Solution

The fourth proportional to 7,212.08, 10,791.12 and 5,136.88 is: 7,686.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,212.08 : 10,791.12 = 5,136.88 : x
  2. Step 2: Convert to fraction form
    7,212.08/10,791.12 = 5,136.88/x
  3. Step 3: Cross multiply
    7,212.08x = 10,791.12 × 5,136.88
  4. Step 4: Simplify right side
    7,212.08x = 55,432,688.51
  5. Step 5: Solve for x
    x = 55,432,688.51/7,212.08
  6. Step 6: Final answer
    x = 7,686.09

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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.