Home / 5,218.90-7,201.78-2,860.58

Finding the Fourth Proportional to 5,218.90, 7,201.78 and 2,860.58

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Solution

The fourth proportional to 5,218.90, 7,201.78 and 2,860.58 is: 3,947.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.90 : 7,201.78 = 2,860.58 : x
  2. Step 2: Convert to fraction form
    5,218.90/7,201.78 = 2,860.58/x
  3. Step 3: Cross multiply
    5,218.90x = 7,201.78 × 2,860.58
  4. Step 4: Simplify right side
    5,218.90x = 20,601,278.69
  5. Step 5: Solve for x
    x = 20,601,278.69/5,218.90
  6. Step 6: Final answer
    x = 3,947.44

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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.