Home / 1,995.32-2,990.40-1,378.04

Finding the Fourth Proportional to 1,995.32, 2,990.40 and 1,378.04

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Solution

The fourth proportional to 1,995.32, 2,990.40 and 1,378.04 is: 2,065.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995.32 : 2,990.40 = 1,378.04 : x
  2. Step 2: Convert to fraction form
    1,995.32/2,990.40 = 1,378.04/x
  3. Step 3: Cross multiply
    1,995.32x = 2,990.40 × 1,378.04
  4. Step 4: Simplify right side
    1,995.32x = 4,120,890.82
  5. Step 5: Solve for x
    x = 4,120,890.82/1,995.32
  6. Step 6: Final answer
    x = 2,065.28

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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.