Home / 2,123.36-2,930.14-1,179.21

Finding the Fourth Proportional to 2,123.36, 2,930.14 and 1,179.21

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Solution

The fourth proportional to 2,123.36, 2,930.14 and 1,179.21 is: 1,627.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,123.36 : 2,930.14 = 1,179.21 : x
  2. Step 2: Convert to fraction form
    2,123.36/2,930.14 = 1,179.21/x
  3. Step 3: Cross multiply
    2,123.36x = 2,930.14 × 1,179.21
  4. Step 4: Simplify right side
    2,123.36x = 3,455,245.23
  5. Step 5: Solve for x
    x = 3,455,245.23/2,123.36
  6. Step 6: Final answer
    x = 1,627.25

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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.