Home / 9,190.79-12,682.55-5,212.28

Finding the Fourth Proportional to 9,190.79, 12,682.55 and 5,212.28

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Solution

The fourth proportional to 9,190.79, 12,682.55 and 5,212.28 is: 7,192.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,190.79 : 12,682.55 = 5,212.28 : x
  2. Step 2: Convert to fraction form
    9,190.79/12,682.55 = 5,212.28/x
  3. Step 3: Cross multiply
    9,190.79x = 12,682.55 × 5,212.28
  4. Step 4: Simplify right side
    9,190.79x = 66,104,951.33
  5. Step 5: Solve for x
    x = 66,104,951.33/9,190.79
  6. Step 6: Final answer
    x = 7,192.52

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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.