Home / 1,620.69-2,237.87-1,539.15

Finding the Fourth Proportional to 1,620.69, 2,237.87 and 1,539.15

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Solution

The fourth proportional to 1,620.69, 2,237.87 and 1,539.15 is: 2,125.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.69 : 2,237.87 = 1,539.15 : x
  2. Step 2: Convert to fraction form
    1,620.69/2,237.87 = 1,539.15/x
  3. Step 3: Cross multiply
    1,620.69x = 2,237.87 × 1,539.15
  4. Step 4: Simplify right side
    1,620.69x = 3,444,409.91
  5. Step 5: Solve for x
    x = 3,444,409.91/1,620.69
  6. Step 6: Final answer
    x = 2,125.27

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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.