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Finding the Fourth Proportional to 3,059.85, 4,219.74 and 1,938.81

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Solution

The fourth proportional to 3,059.85, 4,219.74 and 1,938.81 is: 2,673.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,059.85 : 4,219.74 = 1,938.81 : x
  2. Step 2: Convert to fraction form
    3,059.85/4,219.74 = 1,938.81/x
  3. Step 3: Cross multiply
    3,059.85x = 4,219.74 × 1,938.81
  4. Step 4: Simplify right side
    3,059.85x = 8,181,274.11
  5. Step 5: Solve for x
    x = 8,181,274.11/3,059.85
  6. Step 6: Final answer
    x = 2,673.75

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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.