Home / 1,405.36-2,105.34-1,262.26

Finding the Fourth Proportional to 1,405.36, 2,105.34 and 1,262.26

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Solution

The fourth proportional to 1,405.36, 2,105.34 and 1,262.26 is: 1,890.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405.36 : 2,105.34 = 1,262.26 : x
  2. Step 2: Convert to fraction form
    1,405.36/2,105.34 = 1,262.26/x
  3. Step 3: Cross multiply
    1,405.36x = 2,105.34 × 1,262.26
  4. Step 4: Simplify right side
    1,405.36x = 2,657,486.47
  5. Step 5: Solve for x
    x = 2,657,486.47/1,405.36
  6. Step 6: Final answer
    x = 1,890.96

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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.