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Finding the Fourth Proportional to 1,971.54, 2,960.55 and 1,323.54

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Solution

The fourth proportional to 1,971.54, 2,960.55 and 1,323.54 is: 1,987.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.54 : 2,960.55 = 1,323.54 : x
  2. Step 2: Convert to fraction form
    1,971.54/2,960.55 = 1,323.54/x
  3. Step 3: Cross multiply
    1,971.54x = 2,960.55 × 1,323.54
  4. Step 4: Simplify right side
    1,971.54x = 3,918,406.35
  5. Step 5: Solve for x
    x = 3,918,406.35/1,971.54
  6. Step 6: Final answer
    x = 1,987.49

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1.5x scale

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.