Home / 2,156.57-2,975.09-1,271.96

Finding the Fourth Proportional to 2,156.57, 2,975.09 and 1,271.96

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Solution

The fourth proportional to 2,156.57, 2,975.09 and 1,271.96 is: 1,754.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.57 : 2,975.09 = 1,271.96 : x
  2. Step 2: Convert to fraction form
    2,156.57/2,975.09 = 1,271.96/x
  3. Step 3: Cross multiply
    2,156.57x = 2,975.09 × 1,271.96
  4. Step 4: Simplify right side
    2,156.57x = 3,784,174.24
  5. Step 5: Solve for x
    x = 3,784,174.24/2,156.57
  6. Step 6: Final answer
    x = 1,754.72

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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.