Home / 2,922.25-4,032.80-1,680.25

Finding the Fourth Proportional to 2,922.25, 4,032.80 and 1,680.25

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Solution

The fourth proportional to 2,922.25, 4,032.80 and 1,680.25 is: 2,318.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,922.25 : 4,032.80 = 1,680.25 : x
  2. Step 2: Convert to fraction form
    2,922.25/4,032.80 = 1,680.25/x
  3. Step 3: Cross multiply
    2,922.25x = 4,032.80 × 1,680.25
  4. Step 4: Simplify right side
    2,922.25x = 6,776,112.20
  5. Step 5: Solve for x
    x = 6,776,112.20/2,922.25
  6. Step 6: Final answer
    x = 2,318.80

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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.