Home / 7,205.19-9,943.36-4,221.15

Finding the Fourth Proportional to 7,205.19, 9,943.36 and 4,221.15

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Solution

The fourth proportional to 7,205.19, 9,943.36 and 4,221.15 is: 5,825.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,205.19 : 9,943.36 = 4,221.15 : x
  2. Step 2: Convert to fraction form
    7,205.19/9,943.36 = 4,221.15/x
  3. Step 3: Cross multiply
    7,205.19x = 9,943.36 × 4,221.15
  4. Step 4: Simplify right side
    7,205.19x = 41,972,366.22
  5. Step 5: Solve for x
    x = 41,972,366.22/7,205.19
  6. Step 6: Final answer
    x = 5,825.30

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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.