Home / 5,111.92-7,668.36-1,992.16

Finding the Fourth Proportional to 5,111.92, 7,668.36 and 1,992.16

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Solution

The fourth proportional to 5,111.92, 7,668.36 and 1,992.16 is: 2,988.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.92 : 7,668.36 = 1,992.16 : x
  2. Step 2: Convert to fraction form
    5,111.92/7,668.36 = 1,992.16/x
  3. Step 3: Cross multiply
    5,111.92x = 7,668.36 × 1,992.16
  4. Step 4: Simplify right side
    5,111.92x = 15,276,600.06
  5. Step 5: Solve for x
    x = 15,276,600.06/5,111.92
  6. Step 6: Final answer
    x = 2,988.43

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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.