Home / 7,201.98-9,938.30-4,218.35

Finding the Fourth Proportional to 7,201.98, 9,938.30 and 4,218.35

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Solution

The fourth proportional to 7,201.98, 9,938.30 and 4,218.35 is: 5,821.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,201.98 : 9,938.30 = 4,218.35 : x
  2. Step 2: Convert to fraction form
    7,201.98/9,938.30 = 4,218.35/x
  3. Step 3: Cross multiply
    7,201.98x = 9,938.30 × 4,218.35
  4. Step 4: Simplify right side
    7,201.98x = 41,923,157.02
  5. Step 5: Solve for x
    x = 41,923,157.02/7,201.98
  6. Step 6: Final answer
    x = 5,821.06

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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.