Home / 3,128.40-4,690.44-2,152.08

Finding the Fourth Proportional to 3,128.40, 4,690.44 and 2,152.08

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Solution

The fourth proportional to 3,128.40, 4,690.44 and 2,152.08 is: 3,226.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.40 : 4,690.44 = 2,152.08 : x
  2. Step 2: Convert to fraction form
    3,128.40/4,690.44 = 2,152.08/x
  3. Step 3: Cross multiply
    3,128.40x = 4,690.44 × 2,152.08
  4. Step 4: Simplify right side
    3,128.40x = 10,094,202.12
  5. Step 5: Solve for x
    x = 10,094,202.12/3,128.40
  6. Step 6: Final answer
    x = 3,226.63

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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.