Home / 1,298.00-1,942.34-1,211.10

Finding the Fourth Proportional to 1,298.00, 1,942.34 and 1,211.10

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Solution

The fourth proportional to 1,298.00, 1,942.34 and 1,211.10 is: 1,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.00 : 1,942.34 = 1,211.10 : x
  2. Step 2: Convert to fraction form
    1,298.00/1,942.34 = 1,211.10/x
  3. Step 3: Cross multiply
    1,298.00x = 1,942.34 × 1,211.10
  4. Step 4: Simplify right side
    1,298.00x = 2,352,361.92
  5. Step 5: Solve for x
    x = 2,352,361.92/1,298.00
  6. Step 6: Final answer
    x = 1,812.30

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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.