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Finding the Fourth Proportional to 2,031.70, 3,047.92 and 799.70

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Solution

The fourth proportional to 2,031.70, 3,047.92 and 799.70 is: 1,199.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.70 : 3,047.92 = 799.70 : x
  2. Step 2: Convert to fraction form
    2,031.70/3,047.92 = 799.70/x
  3. Step 3: Cross multiply
    2,031.70x = 3,047.92 × 799.70
  4. Step 4: Simplify right side
    2,031.70x = 2,437,421.62
  5. Step 5: Solve for x
    x = 2,437,421.62/2,031.70
  6. Step 6: Final answer
    x = 1,199.70

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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.