Home / 1,636.07-2,257.75-890.01

Finding the Fourth Proportional to 1,636.07, 2,257.75 and 890.01

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Solution

The fourth proportional to 1,636.07, 2,257.75 and 890.01 is: 1,228.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.07 : 2,257.75 = 890.01 : x
  2. Step 2: Convert to fraction form
    1,636.07/2,257.75 = 890.01/x
  3. Step 3: Cross multiply
    1,636.07x = 2,257.75 × 890.01
  4. Step 4: Simplify right side
    1,636.07x = 2,009,408.79
  5. Step 5: Solve for x
    x = 2,009,408.79/1,636.07
  6. Step 6: Final answer
    x = 1,228.20

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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.