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Finding the Fourth Proportional to 4,074.60, 6,111.90 and 3,831.60

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Solution

The fourth proportional to 4,074.60, 6,111.90 and 3,831.60 is: 5,747.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,074.60 : 6,111.90 = 3,831.60 : x
  2. Step 2: Convert to fraction form
    4,074.60/6,111.90 = 3,831.60/x
  3. Step 3: Cross multiply
    4,074.60x = 6,111.90 × 3,831.60
  4. Step 4: Simplify right side
    4,074.60x = 23,418,356.04
  5. Step 5: Solve for x
    x = 23,418,356.04/4,074.60
  6. Step 6: Final answer
    x = 5,747.40

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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.