Home / 2,143.13-3,212.46-1,045.99

Finding the Fourth Proportional to 2,143.13, 3,212.46 and 1,045.99

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Solution

The fourth proportional to 2,143.13, 3,212.46 and 1,045.99 is: 1,567.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.13 : 3,212.46 = 1,045.99 : x
  2. Step 2: Convert to fraction form
    2,143.13/3,212.46 = 1,045.99/x
  3. Step 3: Cross multiply
    2,143.13x = 3,212.46 × 1,045.99
  4. Step 4: Simplify right side
    2,143.13x = 3,360,201.04
  5. Step 5: Solve for x
    x = 3,360,201.04/2,143.13
  6. Step 6: Final answer
    x = 1,567.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.