Home / 1,298.87-1,943.64-1,211.97

Finding the Fourth Proportional to 1,298.87, 1,943.64 and 1,211.97

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Solution

The fourth proportional to 1,298.87, 1,943.64 and 1,211.97 is: 1,813.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.87 : 1,943.64 = 1,211.97 : x
  2. Step 2: Convert to fraction form
    1,298.87/1,943.64 = 1,211.97/x
  3. Step 3: Cross multiply
    1,298.87x = 1,943.64 × 1,211.97
  4. Step 4: Simplify right side
    1,298.87x = 2,355,633.37
  5. Step 5: Solve for x
    x = 2,355,633.37/1,298.87
  6. Step 6: Final answer
    x = 1,813.60

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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.