Home / 1,821.66-2,512.14-1,191.48

Finding the Fourth Proportional to 1,821.66, 2,512.14 and 1,191.48

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Solution

The fourth proportional to 1,821.66, 2,512.14 and 1,191.48 is: 1,643.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.66 : 2,512.14 = 1,191.48 : x
  2. Step 2: Convert to fraction form
    1,821.66/2,512.14 = 1,191.48/x
  3. Step 3: Cross multiply
    1,821.66x = 2,512.14 × 1,191.48
  4. Step 4: Simplify right side
    1,821.66x = 2,993,164.57
  5. Step 5: Solve for x
    x = 2,993,164.57/1,821.66
  6. Step 6: Final answer
    x = 1,643.10

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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.