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Finding the Fourth Proportional to 3,394.92, 4,683.72 and 1,977.90

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Solution

The fourth proportional to 3,394.92, 4,683.72 and 1,977.90 is: 2,728.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,394.92 : 4,683.72 = 1,977.90 : x
  2. Step 2: Convert to fraction form
    3,394.92/4,683.72 = 1,977.90/x
  3. Step 3: Cross multiply
    3,394.92x = 4,683.72 × 1,977.90
  4. Step 4: Simplify right side
    3,394.92x = 9,263,929.79
  5. Step 5: Solve for x
    x = 9,263,929.79/3,394.92
  6. Step 6: Final answer
    x = 2,728.76

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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.