Home / 2,630.08-3,936.72-1,891.36

Finding the Fourth Proportional to 2,630.08, 3,936.72 and 1,891.36

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Solution

The fourth proportional to 2,630.08, 3,936.72 and 1,891.36 is: 2,831.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,630.08 : 3,936.72 = 1,891.36 : x
  2. Step 2: Convert to fraction form
    2,630.08/3,936.72 = 1,891.36/x
  3. Step 3: Cross multiply
    2,630.08x = 3,936.72 × 1,891.36
  4. Step 4: Simplify right side
    2,630.08x = 7,445,754.74
  5. Step 5: Solve for x
    x = 7,445,754.74/2,630.08
  6. Step 6: Final answer
    x = 2,831.00

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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.