Home / 2,951.20-4,431.60-2,135.20

Finding the Fourth Proportional to 2,951.20, 4,431.60 and 2,135.20

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Solution

The fourth proportional to 2,951.20, 4,431.60 and 2,135.20 is: 3,206.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,951.20 : 4,431.60 = 2,135.20 : x
  2. Step 2: Convert to fraction form
    2,951.20/4,431.60 = 2,135.20/x
  3. Step 3: Cross multiply
    2,951.20x = 4,431.60 × 2,135.20
  4. Step 4: Simplify right side
    2,951.20x = 9,462,352.32
  5. Step 5: Solve for x
    x = 9,462,352.32/2,951.20
  6. Step 6: Final answer
    x = 3,206.27

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1.5x scale

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.