Home / 2,255.65-3,113.76-1,371.74

Finding the Fourth Proportional to 2,255.65, 3,113.76 and 1,371.74

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Solution

The fourth proportional to 2,255.65, 3,113.76 and 1,371.74 is: 1,893.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.65 : 3,113.76 = 1,371.74 : x
  2. Step 2: Convert to fraction form
    2,255.65/3,113.76 = 1,371.74/x
  3. Step 3: Cross multiply
    2,255.65x = 3,113.76 × 1,371.74
  4. Step 4: Simplify right side
    2,255.65x = 4,271,269.14
  5. Step 5: Solve for x
    x = 4,271,269.14/2,255.65
  6. Step 6: Final answer
    x = 1,893.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.