Home / 2,911.21-4,013.35-2,071.59

Finding the Fourth Proportional to 2,911.21, 4,013.35 and 2,071.59

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Solution

The fourth proportional to 2,911.21, 4,013.35 and 2,071.59 is: 2,855.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.21 : 4,013.35 = 2,071.59 : x
  2. Step 2: Convert to fraction form
    2,911.21/4,013.35 = 2,071.59/x
  3. Step 3: Cross multiply
    2,911.21x = 4,013.35 × 2,071.59
  4. Step 4: Simplify right side
    2,911.21x = 8,314,015.73
  5. Step 5: Solve for x
    x = 8,314,015.73/2,911.21
  6. Step 6: Final answer
    x = 2,855.86

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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.