Home / 2,181.10-3,266.85-1,317.10

Finding the Fourth Proportional to 2,181.10, 3,266.85 and 1,317.10

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Solution

The fourth proportional to 2,181.10, 3,266.85 and 1,317.10 is: 1,972.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.10 : 3,266.85 = 1,317.10 : x
  2. Step 2: Convert to fraction form
    2,181.10/3,266.85 = 1,317.10/x
  3. Step 3: Cross multiply
    2,181.10x = 3,266.85 × 1,317.10
  4. Step 4: Simplify right side
    2,181.10x = 4,302,768.14
  5. Step 5: Solve for x
    x = 4,302,768.14/2,181.10
  6. Step 6: Final answer
    x = 1,972.75

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1.5x scale

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.