Home / 1,721.99-2,579.36-1,428.77

Finding the Fourth Proportional to 1,721.99, 2,579.36 and 1,428.77

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Solution

The fourth proportional to 1,721.99, 2,579.36 and 1,428.77 is: 2,140.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,721.99 : 2,579.36 = 1,428.77 : x
  2. Step 2: Convert to fraction form
    1,721.99/2,579.36 = 1,428.77/x
  3. Step 3: Cross multiply
    1,721.99x = 2,579.36 × 1,428.77
  4. Step 4: Simplify right side
    1,721.99x = 3,685,292.15
  5. Step 5: Solve for x
    x = 3,685,292.15/1,721.99
  6. Step 6: Final answer
    x = 2,140.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.