Home / 2,071.80-2,858.22-1,372.28

Finding the Fourth Proportional to 2,071.80, 2,858.22 and 1,372.28

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Solution

The fourth proportional to 2,071.80, 2,858.22 and 1,372.28 is: 1,893.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,071.80 : 2,858.22 = 1,372.28 : x
  2. Step 2: Convert to fraction form
    2,071.80/2,858.22 = 1,372.28/x
  3. Step 3: Cross multiply
    2,071.80x = 2,858.22 × 1,372.28
  4. Step 4: Simplify right side
    2,071.80x = 3,922,278.14
  5. Step 5: Solve for x
    x = 3,922,278.14/2,071.80
  6. Step 6: Final answer
    x = 1,893.17

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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.