Home / 2,163.31-2,985.24-1,219.14

Finding the Fourth Proportional to 2,163.31, 2,985.24 and 1,219.14

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Solution

The fourth proportional to 2,163.31, 2,985.24 and 1,219.14 is: 1,682.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.31 : 2,985.24 = 1,219.14 : x
  2. Step 2: Convert to fraction form
    2,163.31/2,985.24 = 1,219.14/x
  3. Step 3: Cross multiply
    2,163.31x = 2,985.24 × 1,219.14
  4. Step 4: Simplify right side
    2,163.31x = 3,639,425.49
  5. Step 5: Solve for x
    x = 3,639,425.49/2,163.31
  6. Step 6: Final answer
    x = 1,682.34

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Double scale
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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.