Home / 2,163-2,984.23-1,278.63

Finding the Fourth Proportional to 2,163, 2,984.23 and 1,278.63

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Solution

The fourth proportional to 2,163, 2,984.23 and 1,278.63 is: 1,764.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163 : 2,984.23 = 1,278.63 : x
  2. Step 2: Convert to fraction form
    2,163/2,984.23 = 1,278.63/x
  3. Step 3: Cross multiply
    2,163x = 2,984.23 × 1,278.63
  4. Step 4: Simplify right side
    2,163x = 3,815,726.00
  5. Step 5: Solve for x
    x = 3,815,726.00/2,163
  6. Step 6: Final answer
    x = 1,764.09

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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.