Home / 2,122.30-2,930.64-1,326.99

Finding the Fourth Proportional to 2,122.30, 2,930.64 and 1,326.99

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Solution

The fourth proportional to 2,122.30, 2,930.64 and 1,326.99 is: 1,832.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.30 : 2,930.64 = 1,326.99 : x
  2. Step 2: Convert to fraction form
    2,122.30/2,930.64 = 1,326.99/x
  3. Step 3: Cross multiply
    2,122.30x = 2,930.64 × 1,326.99
  4. Step 4: Simplify right side
    2,122.30x = 3,888,929.97
  5. Step 5: Solve for x
    x = 3,888,929.97/2,122.30
  6. Step 6: Final answer
    x = 1,832.41

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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.