Home / 1,579.91-2,180.67-1,021.01

Finding the Fourth Proportional to 1,579.91, 2,180.67 and 1,021.01

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Solution

The fourth proportional to 1,579.91, 2,180.67 and 1,021.01 is: 1,409.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.91 : 2,180.67 = 1,021.01 : x
  2. Step 2: Convert to fraction form
    1,579.91/2,180.67 = 1,021.01/x
  3. Step 3: Cross multiply
    1,579.91x = 2,180.67 × 1,021.01
  4. Step 4: Simplify right side
    1,579.91x = 2,226,485.88
  5. Step 5: Solve for x
    x = 2,226,485.88/1,579.91
  6. Step 6: Final answer
    x = 1,409.25

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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.