Home / 1,620.87-2,236.01-1,557.99

Finding the Fourth Proportional to 1,620.87, 2,236.01 and 1,557.99

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Solution

The fourth proportional to 1,620.87, 2,236.01 and 1,557.99 is: 2,149.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.87 : 2,236.01 = 1,557.99 : x
  2. Step 2: Convert to fraction form
    1,620.87/2,236.01 = 1,557.99/x
  3. Step 3: Cross multiply
    1,620.87x = 2,236.01 × 1,557.99
  4. Step 4: Simplify right side
    1,620.87x = 3,483,670.04
  5. Step 5: Solve for x
    x = 3,483,670.04/1,620.87
  6. Step 6: Final answer
    x = 2,149.27

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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.