Home / 5,218.05-7,199.13-2,978.33

Finding the Fourth Proportional to 5,218.05, 7,199.13 and 2,978.33

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Solution

The fourth proportional to 5,218.05, 7,199.13 and 2,978.33 is: 4,109.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.05 : 7,199.13 = 2,978.33 : x
  2. Step 2: Convert to fraction form
    5,218.05/7,199.13 = 2,978.33/x
  3. Step 3: Cross multiply
    5,218.05x = 7,199.13 × 2,978.33
  4. Step 4: Simplify right side
    5,218.05x = 21,441,402.85
  5. Step 5: Solve for x
    x = 21,441,402.85/5,218.05
  6. Step 6: Final answer
    x = 4,109.08

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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.