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Finding the Fourth Proportional to 2,173.40, 3,259.85 and 634.40

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Solution

The fourth proportional to 2,173.40, 3,259.85 and 634.40 is: 951.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,173.40 : 3,259.85 = 634.40 : x
  2. Step 2: Convert to fraction form
    2,173.40/3,259.85 = 634.40/x
  3. Step 3: Cross multiply
    2,173.40x = 3,259.85 × 634.40
  4. Step 4: Simplify right side
    2,173.40x = 2,068,048.84
  5. Step 5: Solve for x
    x = 2,068,048.84/2,173.40
  6. Step 6: Final answer
    x = 951.53

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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.