Home / 2,928.60-4,047.30-2,185.02

Finding the Fourth Proportional to 2,928.60, 4,047.30 and 2,185.02

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Solution

The fourth proportional to 2,928.60, 4,047.30 and 2,185.02 is: 3,019.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,928.60 : 4,047.30 = 2,185.02 : x
  2. Step 2: Convert to fraction form
    2,928.60/4,047.30 = 2,185.02/x
  3. Step 3: Cross multiply
    2,928.60x = 4,047.30 × 2,185.02
  4. Step 4: Simplify right side
    2,928.60x = 8,843,431.45
  5. Step 5: Solve for x
    x = 8,843,431.45/2,928.60
  6. Step 6: Final answer
    x = 3,019.68

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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.