Home / 2,942.87-4,384.40-2,817.11

Finding the Fourth Proportional to 2,942.87, 4,384.40 and 2,817.11

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Solution

The fourth proportional to 2,942.87, 4,384.40 and 2,817.11 is: 4,197.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,942.87 : 4,384.40 = 2,817.11 : x
  2. Step 2: Convert to fraction form
    2,942.87/4,384.40 = 2,817.11/x
  3. Step 3: Cross multiply
    2,942.87x = 4,384.40 × 2,817.11
  4. Step 4: Simplify right side
    2,942.87x = 12,351,333.96
  5. Step 5: Solve for x
    x = 12,351,333.96/2,942.87
  6. Step 6: Final answer
    x = 4,197.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.