Home / 3,211.32-4,431.78-1,885.44

Finding the Fourth Proportional to 3,211.32, 4,431.78 and 1,885.44

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Solution

The fourth proportional to 3,211.32, 4,431.78 and 1,885.44 is: 2,602.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.32 : 4,431.78 = 1,885.44 : x
  2. Step 2: Convert to fraction form
    3,211.32/4,431.78 = 1,885.44/x
  3. Step 3: Cross multiply
    3,211.32x = 4,431.78 × 1,885.44
  4. Step 4: Simplify right side
    3,211.32x = 8,355,855.28
  5. Step 5: Solve for x
    x = 8,355,855.28/3,211.32
  6. Step 6: Final answer
    x = 2,602.00

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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.