Home / 2,928.96-4,390.20-1,953.72

Finding the Fourth Proportional to 2,928.96, 4,390.20 and 1,953.72

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Solution

The fourth proportional to 2,928.96, 4,390.20 and 1,953.72 is: 2,928.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.96 : 4,390.20 = 1,953.72 : x
  2. Step 2: Convert to fraction form
    2,928.96/4,390.20 = 1,953.72/x
  3. Step 3: Cross multiply
    2,928.96x = 4,390.20 × 1,953.72
  4. Step 4: Simplify right side
    2,928.96x = 8,577,221.54
  5. Step 5: Solve for x
    x = 8,577,221.54/2,928.96
  6. Step 6: Final answer
    x = 2,928.42

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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.