Home / 2,911.82-4,018.30-1,585.44

Finding the Fourth Proportional to 2,911.82, 4,018.30 and 1,585.44

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Solution

The fourth proportional to 2,911.82, 4,018.30 and 1,585.44 is: 2,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.82 : 4,018.30 = 1,585.44 : x
  2. Step 2: Convert to fraction form
    2,911.82/4,018.30 = 1,585.44/x
  3. Step 3: Cross multiply
    2,911.82x = 4,018.30 × 1,585.44
  4. Step 4: Simplify right side
    2,911.82x = 6,370,773.55
  5. Step 5: Solve for x
    x = 6,370,773.55/2,911.82
  6. Step 6: Final answer
    x = 2,187.90

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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.