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Finding the Fourth Proportional to 2,031.19, 3,046.33 and 644.63

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Solution

The fourth proportional to 2,031.19, 3,046.33 and 644.63 is: 966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,031.19 : 3,046.33 = 644.63 : x
  2. Step 2: Convert to fraction form
    2,031.19/3,046.33 = 644.63/x
  3. Step 3: Cross multiply
    2,031.19x = 3,046.33 × 644.63
  4. Step 4: Simplify right side
    2,031.19x = 1,963,755.71
  5. Step 5: Solve for x
    x = 1,963,755.71/2,031.19
  6. Step 6: Final answer
    x = 966.80

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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.