Home / 2,511.78-3,466.81-1,393.11

Finding the Fourth Proportional to 2,511.78, 3,466.81 and 1,393.11

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Solution

The fourth proportional to 2,511.78, 3,466.81 and 1,393.11 is: 1,922.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,511.78 : 3,466.81 = 1,393.11 : x
  2. Step 2: Convert to fraction form
    2,511.78/3,466.81 = 1,393.11/x
  3. Step 3: Cross multiply
    2,511.78x = 3,466.81 × 1,393.11
  4. Step 4: Simplify right side
    2,511.78x = 4,829,656.25
  5. Step 5: Solve for x
    x = 4,829,656.25/2,511.78
  6. Step 6: Final answer
    x = 1,922.80

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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.