Home / 3,105.14-4,285.31-1,779.17

Finding the Fourth Proportional to 3,105.14, 4,285.31 and 1,779.17

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Solution

The fourth proportional to 3,105.14, 4,285.31 and 1,779.17 is: 2,455.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.14 : 4,285.31 = 1,779.17 : x
  2. Step 2: Convert to fraction form
    3,105.14/4,285.31 = 1,779.17/x
  3. Step 3: Cross multiply
    3,105.14x = 4,285.31 × 1,779.17
  4. Step 4: Simplify right side
    3,105.14x = 7,624,264.67
  5. Step 5: Solve for x
    x = 7,624,264.67/3,105.14
  6. Step 6: Final answer
    x = 2,455.37

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1.5x scale

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.