Home / 2,789.15-3,851.66-2,388.47

Finding the Fourth Proportional to 2,789.15, 3,851.66 and 2,388.47

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Solution

The fourth proportional to 2,789.15, 3,851.66 and 2,388.47 is: 3,298.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.15 : 3,851.66 = 2,388.47 : x
  2. Step 2: Convert to fraction form
    2,789.15/3,851.66 = 2,388.47/x
  3. Step 3: Cross multiply
    2,789.15x = 3,851.66 × 2,388.47
  4. Step 4: Simplify right side
    2,789.15x = 9,199,561.07
  5. Step 5: Solve for x
    x = 9,199,561.07/2,789.15
  6. Step 6: Final answer
    x = 3,298.34

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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.