Home / 2,539.32-3,807.81-1,990.32

Finding the Fourth Proportional to 2,539.32, 3,807.81 and 1,990.32

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Solution

The fourth proportional to 2,539.32, 3,807.81 and 1,990.32 is: 2,984.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,539.32 : 3,807.81 = 1,990.32 : x
  2. Step 2: Convert to fraction form
    2,539.32/3,807.81 = 1,990.32/x
  3. Step 3: Cross multiply
    2,539.32x = 3,807.81 × 1,990.32
  4. Step 4: Simplify right side
    2,539.32x = 7,578,760.40
  5. Step 5: Solve for x
    x = 7,578,760.40/2,539.32
  6. Step 6: Final answer
    x = 2,984.56

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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.