Home / 2,453.78-3,386.34-1,405.84

Finding the Fourth Proportional to 2,453.78, 3,386.34 and 1,405.84

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Solution

The fourth proportional to 2,453.78, 3,386.34 and 1,405.84 is: 1,940.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,453.78 : 3,386.34 = 1,405.84 : x
  2. Step 2: Convert to fraction form
    2,453.78/3,386.34 = 1,405.84/x
  3. Step 3: Cross multiply
    2,453.78x = 3,386.34 × 1,405.84
  4. Step 4: Simplify right side
    2,453.78x = 4,760,652.23
  5. Step 5: Solve for x
    x = 4,760,652.23/2,453.78
  6. Step 6: Final answer
    x = 1,940.13

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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.