Home / 1,995.18-2,992.32-1,263.72

Finding the Fourth Proportional to 1,995.18, 2,992.32 and 1,263.72

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Solution

The fourth proportional to 1,995.18, 2,992.32 and 1,263.72 is: 1,895.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995.18 : 2,992.32 = 1,263.72 : x
  2. Step 2: Convert to fraction form
    1,995.18/2,992.32 = 1,263.72/x
  3. Step 3: Cross multiply
    1,995.18x = 2,992.32 × 1,263.72
  4. Step 4: Simplify right side
    1,995.18x = 3,781,454.63
  5. Step 5: Solve for x
    x = 3,781,454.63/1,995.18
  6. Step 6: Final answer
    x = 1,895.29

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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.