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Finding the Fourth Proportional to 3,612.88, 4,983.50 and 2,491.90

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Solution

The fourth proportional to 3,612.88, 4,983.50 and 2,491.90 is: 3,437.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.88 : 4,983.50 = 2,491.90 : x
  2. Step 2: Convert to fraction form
    3,612.88/4,983.50 = 2,491.90/x
  3. Step 3: Cross multiply
    3,612.88x = 4,983.50 × 2,491.90
  4. Step 4: Simplify right side
    3,612.88x = 12,418,383.65
  5. Step 5: Solve for x
    x = 12,418,383.65/3,612.88
  6. Step 6: Final answer
    x = 3,437.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.