Home / 2,912.16-4,013.34-2,072.88

Finding the Fourth Proportional to 2,912.16, 4,013.34 and 2,072.88

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Solution

The fourth proportional to 2,912.16, 4,013.34 and 2,072.88 is: 2,856.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.16 : 4,013.34 = 2,072.88 : x
  2. Step 2: Convert to fraction form
    2,912.16/4,013.34 = 2,072.88/x
  3. Step 3: Cross multiply
    2,912.16x = 4,013.34 × 2,072.88
  4. Step 4: Simplify right side
    2,912.16x = 8,319,172.22
  5. Step 5: Solve for x
    x = 8,319,172.22/2,912.16
  6. Step 6: Final answer
    x = 2,856.70

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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.