Home / 3,135.91-4,328.40-1,956.28

Finding the Fourth Proportional to 3,135.91, 4,328.40 and 1,956.28

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Solution

The fourth proportional to 3,135.91, 4,328.40 and 1,956.28 is: 2,700.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.91 : 4,328.40 = 1,956.28 : x
  2. Step 2: Convert to fraction form
    3,135.91/4,328.40 = 1,956.28/x
  3. Step 3: Cross multiply
    3,135.91x = 4,328.40 × 1,956.28
  4. Step 4: Simplify right side
    3,135.91x = 8,467,562.35
  5. Step 5: Solve for x
    x = 8,467,562.35/3,135.91
  6. Step 6: Final answer
    x = 2,700.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.