Home / 2,129.14-2,938.44-1,343.44

Finding the Fourth Proportional to 2,129.14, 2,938.44 and 1,343.44

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Solution

The fourth proportional to 2,129.14, 2,938.44 and 1,343.44 is: 1,854.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.14 : 2,938.44 = 1,343.44 : x
  2. Step 2: Convert to fraction form
    2,129.14/2,938.44 = 1,343.44/x
  3. Step 3: Cross multiply
    2,129.14x = 2,938.44 × 1,343.44
  4. Step 4: Simplify right side
    2,129.14x = 3,947,617.83
  5. Step 5: Solve for x
    x = 3,947,617.83/2,129.14
  6. Step 6: Final answer
    x = 1,854.09

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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.