Home / 1,814.64-2,718.02-1,121.48

Finding the Fourth Proportional to 1,814.64, 2,718.02 and 1,121.48

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Solution

The fourth proportional to 1,814.64, 2,718.02 and 1,121.48 is: 1,679.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,814.64 : 2,718.02 = 1,121.48 : x
  2. Step 2: Convert to fraction form
    1,814.64/2,718.02 = 1,121.48/x
  3. Step 3: Cross multiply
    1,814.64x = 2,718.02 × 1,121.48
  4. Step 4: Simplify right side
    1,814.64x = 3,048,205.07
  5. Step 5: Solve for x
    x = 3,048,205.07/1,814.64
  6. Step 6: Final answer
    x = 1,679.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.