Home / 1,878.19-2,591.64-1,081.39

Finding the Fourth Proportional to 1,878.19, 2,591.64 and 1,081.39

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Solution

The fourth proportional to 1,878.19, 2,591.64 and 1,081.39 is: 1,492.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.19 : 2,591.64 = 1,081.39 : x
  2. Step 2: Convert to fraction form
    1,878.19/2,591.64 = 1,081.39/x
  3. Step 3: Cross multiply
    1,878.19x = 2,591.64 × 1,081.39
  4. Step 4: Simplify right side
    1,878.19x = 2,802,573.58
  5. Step 5: Solve for x
    x = 2,802,573.58/1,878.19
  6. Step 6: Final answer
    x = 1,492.17

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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.