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Finding the Fourth Proportional to 7,192.09, 9,921.29 and 4,950.07

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Solution

The fourth proportional to 7,192.09, 9,921.29 and 4,950.07 is: 6,828.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,192.09 : 9,921.29 = 4,950.07 : x
  2. Step 2: Convert to fraction form
    7,192.09/9,921.29 = 4,950.07/x
  3. Step 3: Cross multiply
    7,192.09x = 9,921.29 × 4,950.07
  4. Step 4: Simplify right side
    7,192.09x = 49,111,100.20
  5. Step 5: Solve for x
    x = 49,111,100.20/7,192.09
  6. Step 6: Final answer
    x = 6,828.49

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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.