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Finding the Fourth Proportional to 1,982.93, 2,975.03 and 1,243.00

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Solution

The fourth proportional to 1,982.93, 2,975.03 and 1,243.00 is: 1,864.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.93 : 2,975.03 = 1,243.00 : x
  2. Step 2: Convert to fraction form
    1,982.93/2,975.03 = 1,243.00/x
  3. Step 3: Cross multiply
    1,982.93x = 2,975.03 × 1,243.00
  4. Step 4: Simplify right side
    1,982.93x = 3,697,947.72
  5. Step 5: Solve for x
    x = 3,697,947.72/1,982.93
  6. Step 6: Final answer
    x = 1,864.89

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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.