Home / 2,814.40-3,883.53-1,555.37

Finding the Fourth Proportional to 2,814.40, 3,883.53 and 1,555.37

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Solution

The fourth proportional to 2,814.40, 3,883.53 and 1,555.37 is: 2,146.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.40 : 3,883.53 = 1,555.37 : x
  2. Step 2: Convert to fraction form
    2,814.40/3,883.53 = 1,555.37/x
  3. Step 3: Cross multiply
    2,814.40x = 3,883.53 × 1,555.37
  4. Step 4: Simplify right side
    2,814.40x = 6,040,326.06
  5. Step 5: Solve for x
    x = 6,040,326.06/2,814.40
  6. Step 6: Final answer
    x = 2,146.22

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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.