Home / 2,140.90-2,954.91-1,344.58

Finding the Fourth Proportional to 2,140.90, 2,954.91 and 1,344.58

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Solution

The fourth proportional to 2,140.90, 2,954.91 and 1,344.58 is: 1,855.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.90 : 2,954.91 = 1,344.58 : x
  2. Step 2: Convert to fraction form
    2,140.90/2,954.91 = 1,344.58/x
  3. Step 3: Cross multiply
    2,140.90x = 2,954.91 × 1,344.58
  4. Step 4: Simplify right side
    2,140.90x = 3,973,112.89
  5. Step 5: Solve for x
    x = 3,973,112.89/2,140.90
  6. Step 6: Final answer
    x = 1,855.81

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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.