Home / 2,911.42-4,015.50-2,071.30

Finding the Fourth Proportional to 2,911.42, 4,015.50 and 2,071.30

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Solution

The fourth proportional to 2,911.42, 4,015.50 and 2,071.30 is: 2,856.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.42 : 4,015.50 = 2,071.30 : x
  2. Step 2: Convert to fraction form
    2,911.42/4,015.50 = 2,071.30/x
  3. Step 3: Cross multiply
    2,911.42x = 4,015.50 × 2,071.30
  4. Step 4: Simplify right side
    2,911.42x = 8,317,305.15
  5. Step 5: Solve for x
    x = 8,317,305.15/2,911.42
  6. Step 6: Final answer
    x = 2,856.79

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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.