Home / 2,163-2,984.85-1,218.96

Finding the Fourth Proportional to 2,163, 2,984.85 and 1,218.96

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Solution

The fourth proportional to 2,163, 2,984.85 and 1,218.96 is: 1,682.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163 : 2,984.85 = 1,218.96 : x
  2. Step 2: Convert to fraction form
    2,163/2,984.85 = 1,218.96/x
  3. Step 3: Cross multiply
    2,163x = 2,984.85 × 1,218.96
  4. Step 4: Simplify right side
    2,163x = 3,638,412.76
  5. Step 5: Solve for x
    x = 3,638,412.76/2,163
  6. Step 6: Final answer
    x = 1,682.11

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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.