Home / 1,211.34-1,813.01-1,042.38

Finding the Fourth Proportional to 1,211.34, 1,813.01 and 1,042.38

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Solution

The fourth proportional to 1,211.34, 1,813.01 and 1,042.38 is: 1,560.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211.34 : 1,813.01 = 1,042.38 : x
  2. Step 2: Convert to fraction form
    1,211.34/1,813.01 = 1,042.38/x
  3. Step 3: Cross multiply
    1,211.34x = 1,813.01 × 1,042.38
  4. Step 4: Simplify right side
    1,211.34x = 1,889,845.36
  5. Step 5: Solve for x
    x = 1,889,845.36/1,211.34
  6. Step 6: Final answer
    x = 1,560.13

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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.