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Finding the Fourth Proportional to 1,983.07, 2,975.02 and 750.45

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Solution

The fourth proportional to 1,983.07, 2,975.02 and 750.45 is: 1,125.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.07 : 2,975.02 = 750.45 : x
  2. Step 2: Convert to fraction form
    1,983.07/2,975.02 = 750.45/x
  3. Step 3: Cross multiply
    1,983.07x = 2,975.02 × 750.45
  4. Step 4: Simplify right side
    1,983.07x = 2,232,603.76
  5. Step 5: Solve for x
    x = 2,232,603.76/1,983.07
  6. Step 6: Final answer
    x = 1,125.83

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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.