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Finding the Fourth Proportional to 1,958.60, 2,938.86 and 984.52

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Solution

The fourth proportional to 1,958.60, 2,938.86 and 984.52 is: 1,477.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,958.60 : 2,938.86 = 984.52 : x
  2. Step 2: Convert to fraction form
    1,958.60/2,938.86 = 984.52/x
  3. Step 3: Cross multiply
    1,958.60x = 2,938.86 × 984.52
  4. Step 4: Simplify right side
    1,958.60x = 2,893,366.45
  5. Step 5: Solve for x
    x = 2,893,366.45/1,958.60
  6. Step 6: Final answer
    x = 1,477.26

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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.