Home / 2,142.48-3,214.53-1,319.52

Finding the Fourth Proportional to 2,142.48, 3,214.53 and 1,319.52

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Solution

The fourth proportional to 2,142.48, 3,214.53 and 1,319.52 is: 1,979.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.48 : 3,214.53 = 1,319.52 : x
  2. Step 2: Convert to fraction form
    2,142.48/3,214.53 = 1,319.52/x
  3. Step 3: Cross multiply
    2,142.48x = 3,214.53 × 1,319.52
  4. Step 4: Simplify right side
    2,142.48x = 4,241,636.63
  5. Step 5: Solve for x
    x = 4,241,636.63/2,142.48
  6. Step 6: Final answer
    x = 1,979.78

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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.