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Finding the Fourth Proportional to 2,947.92, 4,420.88 and 1,192.46

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Solution

The fourth proportional to 2,947.92, 4,420.88 and 1,192.46 is: 1,788.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.92 : 4,420.88 = 1,192.46 : x
  2. Step 2: Convert to fraction form
    2,947.92/4,420.88 = 1,192.46/x
  3. Step 3: Cross multiply
    2,947.92x = 4,420.88 × 1,192.46
  4. Step 4: Simplify right side
    2,947.92x = 5,271,722.56
  5. Step 5: Solve for x
    x = 5,271,722.56/2,947.92
  6. Step 6: Final answer
    x = 1,788.29

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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.