Home / 4,212.40-5,819.16-4,039.60

Finding the Fourth Proportional to 4,212.40, 5,819.16 and 4,039.60

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Solution

The fourth proportional to 4,212.40, 5,819.16 and 4,039.60 is: 5,580.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.40 : 5,819.16 = 4,039.60 : x
  2. Step 2: Convert to fraction form
    4,212.40/5,819.16 = 4,039.60/x
  3. Step 3: Cross multiply
    4,212.40x = 5,819.16 × 4,039.60
  4. Step 4: Simplify right side
    4,212.40x = 23,507,078.74
  5. Step 5: Solve for x
    x = 23,507,078.74/4,212.40
  6. Step 6: Final answer
    x = 5,580.45

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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.