Home / 7,122.29-9,828.75-3,892.16

Finding the Fourth Proportional to 7,122.29, 9,828.75 and 3,892.16

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Solution

The fourth proportional to 7,122.29, 9,828.75 and 3,892.16 is: 5,371.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.29 : 9,828.75 = 3,892.16 : x
  2. Step 2: Convert to fraction form
    7,122.29/9,828.75 = 3,892.16/x
  3. Step 3: Cross multiply
    7,122.29x = 9,828.75 × 3,892.16
  4. Step 4: Simplify right side
    7,122.29x = 38,255,092.17
  5. Step 5: Solve for x
    x = 38,255,092.17/7,122.29
  6. Step 6: Final answer
    x = 5,371.18

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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.