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Finding the Fourth Proportional to 2,800.94, 4,200.38 and 1,631.34

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Solution

The fourth proportional to 2,800.94, 4,200.38 and 1,631.34 is: 2,446.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.94 : 4,200.38 = 1,631.34 : x
  2. Step 2: Convert to fraction form
    2,800.94/4,200.38 = 1,631.34/x
  3. Step 3: Cross multiply
    2,800.94x = 4,200.38 × 1,631.34
  4. Step 4: Simplify right side
    2,800.94x = 6,852,239.75
  5. Step 5: Solve for x
    x = 6,852,239.75/2,800.94
  6. Step 6: Final answer
    x = 2,446.41

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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.