Home / 1,634.31-2,255.49-971.19

Finding the Fourth Proportional to 1,634.31, 2,255.49 and 971.19

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Solution

The fourth proportional to 1,634.31, 2,255.49 and 971.19 is: 1,340.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,634.31 : 2,255.49 = 971.19 : x
  2. Step 2: Convert to fraction form
    1,634.31/2,255.49 = 971.19/x
  3. Step 3: Cross multiply
    1,634.31x = 2,255.49 × 971.19
  4. Step 4: Simplify right side
    1,634.31x = 2,190,509.33
  5. Step 5: Solve for x
    x = 2,190,509.33/1,634.31
  6. Step 6: Final answer
    x = 1,340.33

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1.5x scale

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.