Home / 2,928.56-4,039.08-2,487.92

Finding the Fourth Proportional to 2,928.56, 4,039.08 and 2,487.92

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Solution

The fourth proportional to 2,928.56, 4,039.08 and 2,487.92 is: 3,431.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.56 : 4,039.08 = 2,487.92 : x
  2. Step 2: Convert to fraction form
    2,928.56/4,039.08 = 2,487.92/x
  3. Step 3: Cross multiply
    2,928.56x = 4,039.08 × 2,487.92
  4. Step 4: Simplify right side
    2,928.56x = 10,048,907.91
  5. Step 5: Solve for x
    x = 10,048,907.91/2,928.56
  6. Step 6: Final answer
    x = 3,431.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.