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Finding the Fourth Proportional to 1,984.16, 2,735.16 and 1,319.60

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Solution

The fourth proportional to 1,984.16, 2,735.16 and 1,319.60 is: 1,819.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.16 : 2,735.16 = 1,319.60 : x
  2. Step 2: Convert to fraction form
    1,984.16/2,735.16 = 1,319.60/x
  3. Step 3: Cross multiply
    1,984.16x = 2,735.16 × 1,319.60
  4. Step 4: Simplify right side
    1,984.16x = 3,609,317.14
  5. Step 5: Solve for x
    x = 3,609,317.14/1,984.16
  6. Step 6: Final answer
    x = 1,819.07

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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.