Home / 1,620.96-2,419.78-1,556.16

Finding the Fourth Proportional to 1,620.96, 2,419.78 and 1,556.16

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Solution

The fourth proportional to 1,620.96, 2,419.78 and 1,556.16 is: 2,323.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.96 : 2,419.78 = 1,556.16 : x
  2. Step 2: Convert to fraction form
    1,620.96/2,419.78 = 1,556.16/x
  3. Step 3: Cross multiply
    1,620.96x = 2,419.78 × 1,556.16
  4. Step 4: Simplify right side
    1,620.96x = 3,765,564.84
  5. Step 5: Solve for x
    x = 3,765,564.84/1,620.96
  6. Step 6: Final answer
    x = 2,323.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.