Home / 7,189.29-9,921.44-3,915.25

Finding the Fourth Proportional to 7,189.29, 9,921.44 and 3,915.25

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Solution

The fourth proportional to 7,189.29, 9,921.44 and 3,915.25 is: 5,403.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.29 : 9,921.44 = 3,915.25 : x
  2. Step 2: Convert to fraction form
    7,189.29/9,921.44 = 3,915.25/x
  3. Step 3: Cross multiply
    7,189.29x = 9,921.44 × 3,915.25
  4. Step 4: Simplify right side
    7,189.29x = 38,844,939.18
  5. Step 5: Solve for x
    x = 38,844,939.18/7,189.29
  6. Step 6: Final answer
    x = 5,403.17

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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.