Home / 2,181.12-2,972.16-2,173.44

Finding the Fourth Proportional to 2,181.12, 2,972.16 and 2,173.44

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Solution

The fourth proportional to 2,181.12, 2,972.16 and 2,173.44 is: 2,961.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,181.12 : 2,972.16 = 2,173.44 : x
  2. Step 2: Convert to fraction form
    2,181.12/2,972.16 = 2,173.44/x
  3. Step 3: Cross multiply
    2,181.12x = 2,972.16 × 2,173.44
  4. Step 4: Simplify right side
    2,181.12x = 6,459,811.43
  5. Step 5: Solve for x
    x = 6,459,811.43/2,181.12
  6. Step 6: Final answer
    x = 2,961.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.