Home / 2,961.90-4,087.72-2,214.56

Finding the Fourth Proportional to 2,961.90, 4,087.72 and 2,214.56

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Solution

The fourth proportional to 2,961.90, 4,087.72 and 2,214.56 is: 3,056.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.90 : 4,087.72 = 2,214.56 : x
  2. Step 2: Convert to fraction form
    2,961.90/4,087.72 = 2,214.56/x
  3. Step 3: Cross multiply
    2,961.90x = 4,087.72 × 2,214.56
  4. Step 4: Simplify right side
    2,961.90x = 9,052,501.20
  5. Step 5: Solve for x
    x = 9,052,501.20/2,961.90
  6. Step 6: Final answer
    x = 3,056.32

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1.5x scale

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.