Home / 5,218.60-7,201.65-2,860.75

Finding the Fourth Proportional to 5,218.60, 7,201.65 and 2,860.75

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Solution

The fourth proportional to 5,218.60, 7,201.65 and 2,860.75 is: 3,947.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.60 : 7,201.65 = 2,860.75 : x
  2. Step 2: Convert to fraction form
    5,218.60/7,201.65 = 2,860.75/x
  3. Step 3: Cross multiply
    5,218.60x = 7,201.65 × 2,860.75
  4. Step 4: Simplify right side
    5,218.60x = 20,602,120.24
  5. Step 5: Solve for x
    x = 20,602,120.24/5,218.60
  6. Step 6: Final answer
    x = 3,947.83

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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.