Home / 4,087.40-5,640.56-2,224.40

Finding the Fourth Proportional to 4,087.40, 5,640.56 and 2,224.40

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Solution

The fourth proportional to 4,087.40, 5,640.56 and 2,224.40 is: 3,069.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.40 : 5,640.56 = 2,224.40 : x
  2. Step 2: Convert to fraction form
    4,087.40/5,640.56 = 2,224.40/x
  3. Step 3: Cross multiply
    4,087.40x = 5,640.56 × 2,224.40
  4. Step 4: Simplify right side
    4,087.40x = 12,546,861.66
  5. Step 5: Solve for x
    x = 12,546,861.66/4,087.40
  6. Step 6: Final answer
    x = 3,069.64

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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.