Home / 2,800.33-3,867.47-2,178.31

Finding the Fourth Proportional to 2,800.33, 3,867.47 and 2,178.31

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Solution

The fourth proportional to 2,800.33, 3,867.47 and 2,178.31 is: 3,008.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.33 : 3,867.47 = 2,178.31 : x
  2. Step 2: Convert to fraction form
    2,800.33/3,867.47 = 2,178.31/x
  3. Step 3: Cross multiply
    2,800.33x = 3,867.47 × 2,178.31
  4. Step 4: Simplify right side
    2,800.33x = 8,424,548.58
  5. Step 5: Solve for x
    x = 8,424,548.58/2,800.33
  6. Step 6: Final answer
    x = 3,008.41

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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.