Home / 1,271.76-1,890.49-1,234.39

Finding the Fourth Proportional to 1,271.76, 1,890.49 and 1,234.39

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Solution

The fourth proportional to 1,271.76, 1,890.49 and 1,234.39 is: 1,834.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.76 : 1,890.49 = 1,234.39 : x
  2. Step 2: Convert to fraction form
    1,271.76/1,890.49 = 1,234.39/x
  3. Step 3: Cross multiply
    1,271.76x = 1,890.49 × 1,234.39
  4. Step 4: Simplify right side
    1,271.76x = 2,333,601.95
  5. Step 5: Solve for x
    x = 2,333,601.95/1,271.76
  6. Step 6: Final answer
    x = 1,834.94

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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.