Home / 5,239.21-7,230.42-3,001.78

Finding the Fourth Proportional to 5,239.21, 7,230.42 and 3,001.78

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Solution

The fourth proportional to 5,239.21, 7,230.42 and 3,001.78 is: 4,142.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.21 : 7,230.42 = 3,001.78 : x
  2. Step 2: Convert to fraction form
    5,239.21/7,230.42 = 3,001.78/x
  3. Step 3: Cross multiply
    5,239.21x = 7,230.42 × 3,001.78
  4. Step 4: Simplify right side
    5,239.21x = 21,704,130.15
  5. Step 5: Solve for x
    x = 21,704,130.15/5,239.21
  6. Step 6: Final answer
    x = 4,142.63

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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.