Home / 1,474.40-2,211.30-743.28

Finding the Fourth Proportional to 1,474.40, 2,211.30 and 743.28

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Solution

The fourth proportional to 1,474.40, 2,211.30 and 743.28 is: 1,114.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.40 : 2,211.30 = 743.28 : x
  2. Step 2: Convert to fraction form
    1,474.40/2,211.30 = 743.28/x
  3. Step 3: Cross multiply
    1,474.40x = 2,211.30 × 743.28
  4. Step 4: Simplify right side
    1,474.40x = 1,643,606.77
  5. Step 5: Solve for x
    x = 1,643,606.77/1,474.40
  6. Step 6: Final answer
    x = 1,114.76

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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.