Home / 5,218.51-7,201.56-2,860.80

Finding the Fourth Proportional to 5,218.51, 7,201.56 and 2,860.80

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Solution

The fourth proportional to 5,218.51, 7,201.56 and 2,860.80 is: 3,947.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.51 : 7,201.56 = 2,860.80 : x
  2. Step 2: Convert to fraction form
    5,218.51/7,201.56 = 2,860.80/x
  3. Step 3: Cross multiply
    5,218.51x = 7,201.56 × 2,860.80
  4. Step 4: Simplify right side
    5,218.51x = 20,602,222.85
  5. Step 5: Solve for x
    x = 20,602,222.85/5,218.51
  6. Step 6: Final answer
    x = 3,947.91

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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.