Home / 1,914.39-2,865.59-1,317.93

Finding the Fourth Proportional to 1,914.39, 2,865.59 and 1,317.93

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Solution

The fourth proportional to 1,914.39, 2,865.59 and 1,317.93 is: 1,972.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.39 : 2,865.59 = 1,317.93 : x
  2. Step 2: Convert to fraction form
    1,914.39/2,865.59 = 1,317.93/x
  3. Step 3: Cross multiply
    1,914.39x = 2,865.59 × 1,317.93
  4. Step 4: Simplify right side
    1,914.39x = 3,776,640.44
  5. Step 5: Solve for x
    x = 3,776,640.44/1,914.39
  6. Step 6: Final answer
    x = 1,972.76

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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.