Home / 1,634.90-2,255.94-971.60

Finding the Fourth Proportional to 1,634.90, 2,255.94 and 971.60

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Solution

The fourth proportional to 1,634.90, 2,255.94 and 971.60 is: 1,340.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634.90 : 2,255.94 = 971.60 : x
  2. Step 2: Convert to fraction form
    1,634.90/2,255.94 = 971.60/x
  3. Step 3: Cross multiply
    1,634.90x = 2,255.94 × 971.60
  4. Step 4: Simplify right side
    1,634.90x = 2,191,871.30
  5. Step 5: Solve for x
    x = 2,191,871.30/1,634.90
  6. Step 6: Final answer
    x = 1,340.68

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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.