Home / 5,212.86-7,192.86-3,087.56

Finding the Fourth Proportional to 5,212.86, 7,192.86 and 3,087.56

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Solution

The fourth proportional to 5,212.86, 7,192.86 and 3,087.56 is: 4,260.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,212.86 : 7,192.86 = 3,087.56 : x
  2. Step 2: Convert to fraction form
    5,212.86/7,192.86 = 3,087.56/x
  3. Step 3: Cross multiply
    5,212.86x = 7,192.86 × 3,087.56
  4. Step 4: Simplify right side
    5,212.86x = 22,208,386.82
  5. Step 5: Solve for x
    x = 22,208,386.82/5,212.86
  6. Step 6: Final answer
    x = 4,260.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.