Home / 2,539.65-3,804.70-1,990.17

Finding the Fourth Proportional to 2,539.65, 3,804.70 and 1,990.17

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Solution

The fourth proportional to 2,539.65, 3,804.70 and 1,990.17 is: 2,981.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.65 : 3,804.70 = 1,990.17 : x
  2. Step 2: Convert to fraction form
    2,539.65/3,804.70 = 1,990.17/x
  3. Step 3: Cross multiply
    2,539.65x = 3,804.70 × 1,990.17
  4. Step 4: Simplify right side
    2,539.65x = 7,571,992.96
  5. Step 5: Solve for x
    x = 7,571,992.96/2,539.65
  6. Step 6: Final answer
    x = 2,981.51

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1.5x scale

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.