Home / 3,968,018.50-5,475,904.42-2,157,221.38

Finding the Fourth Proportional to 3,968,018.50, 5,475,904.42 and 2,157,221.38

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Solution

The fourth proportional to 3,968,018.50, 5,475,904.42 and 2,157,221.38 is: 2,976,986.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968,018.50 : 5,475,904.42 = 2,157,221.38 : x
  2. Step 2: Convert to fraction form
    3,968,018.50/5,475,904.42 = 2,157,221.38/x
  3. Step 3: Cross multiply
    3,968,018.50x = 5,475,904.42 × 2,157,221.38
  4. Step 4: Simplify right side
    3,968,018.50x = 11,812,738,089,660.50
  5. Step 5: Solve for x
    x = 11,812,738,089,660.50/3,968,018.50
  6. Step 6: Final answer
    x = 2,976,986.65

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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.