Home / 2,928.28-4,040.40-1,808.86

Finding the Fourth Proportional to 2,928.28, 4,040.40 and 1,808.86

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Solution

The fourth proportional to 2,928.28, 4,040.40 and 1,808.86 is: 2,495.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.28 : 4,040.40 = 1,808.86 : x
  2. Step 2: Convert to fraction form
    2,928.28/4,040.40 = 1,808.86/x
  3. Step 3: Cross multiply
    2,928.28x = 4,040.40 × 1,808.86
  4. Step 4: Simplify right side
    2,928.28x = 7,308,517.94
  5. Step 5: Solve for x
    x = 7,308,517.94/2,928.28
  6. Step 6: Final answer
    x = 2,495.84

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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.