Home / 3,135.81-4,705.94-1,288.61

Finding the Fourth Proportional to 3,135.81, 4,705.94 and 1,288.61

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Solution

The fourth proportional to 3,135.81, 4,705.94 and 1,288.61 is: 1,933.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.81 : 4,705.94 = 1,288.61 : x
  2. Step 2: Convert to fraction form
    3,135.81/4,705.94 = 1,288.61/x
  3. Step 3: Cross multiply
    3,135.81x = 4,705.94 × 1,288.61
  4. Step 4: Simplify right side
    3,135.81x = 6,064,097.81
  5. Step 5: Solve for x
    x = 6,064,097.81/3,135.81
  6. Step 6: Final answer
    x = 1,933.82

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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.