Home / 2,951.40-4,071.96-2,115.48

Finding the Fourth Proportional to 2,951.40, 4,071.96 and 2,115.48

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Solution

The fourth proportional to 2,951.40, 4,071.96 and 2,115.48 is: 2,918.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,951.40 : 4,071.96 = 2,115.48 : x
  2. Step 2: Convert to fraction form
    2,951.40/4,071.96 = 2,115.48/x
  3. Step 3: Cross multiply
    2,951.40x = 4,071.96 × 2,115.48
  4. Step 4: Simplify right side
    2,951.40x = 8,614,149.94
  5. Step 5: Solve for x
    x = 8,614,149.94/2,951.40
  6. Step 6: Final answer
    x = 2,918.67

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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.