Home / 1,619.58-2,428.85-579.30

Finding the Fourth Proportional to 1,619.58, 2,428.85 and 579.30

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Solution

The fourth proportional to 1,619.58, 2,428.85 and 579.30 is: 868.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.58 : 2,428.85 = 579.30 : x
  2. Step 2: Convert to fraction form
    1,619.58/2,428.85 = 579.30/x
  3. Step 3: Cross multiply
    1,619.58x = 2,428.85 × 579.30
  4. Step 4: Simplify right side
    1,619.58x = 1,407,030.51
  5. Step 5: Solve for x
    x = 1,407,030.51/1,619.58
  6. Step 6: Final answer
    x = 868.76

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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.