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Finding the Fourth Proportional to 1,966.78, 2,952.00 and 993.57

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Solution

The fourth proportional to 1,966.78, 2,952.00 and 993.57 is: 1,491.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.78 : 2,952.00 = 993.57 : x
  2. Step 2: Convert to fraction form
    1,966.78/2,952.00 = 993.57/x
  3. Step 3: Cross multiply
    1,966.78x = 2,952.00 × 993.57
  4. Step 4: Simplify right side
    1,966.78x = 2,932,998.91
  5. Step 5: Solve for x
    x = 2,932,998.91/1,966.78
  6. Step 6: Final answer
    x = 1,491.27

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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.