Home / 2,130.49-2,939.96-1,372.94

Finding the Fourth Proportional to 2,130.49, 2,939.96 and 1,372.94

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Solution

The fourth proportional to 2,130.49, 2,939.96 and 1,372.94 is: 1,894.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.49 : 2,939.96 = 1,372.94 : x
  2. Step 2: Convert to fraction form
    2,130.49/2,939.96 = 1,372.94/x
  3. Step 3: Cross multiply
    2,130.49x = 2,939.96 × 1,372.94
  4. Step 4: Simplify right side
    2,130.49x = 4,036,388.68
  5. Step 5: Solve for x
    x = 4,036,388.68/2,130.49
  6. Step 6: Final answer
    x = 1,894.58

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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.