Home / 2,156.19-2,975.04-1,271.67

Finding the Fourth Proportional to 2,156.19, 2,975.04 and 1,271.67

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Solution

The fourth proportional to 2,156.19, 2,975.04 and 1,271.67 is: 1,754.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.19 : 2,975.04 = 1,271.67 : x
  2. Step 2: Convert to fraction form
    2,156.19/2,975.04 = 1,271.67/x
  3. Step 3: Cross multiply
    2,156.19x = 2,975.04 × 1,271.67
  4. Step 4: Simplify right side
    2,156.19x = 3,783,269.12
  5. Step 5: Solve for x
    x = 3,783,269.12/2,156.19
  6. Step 6: Final answer
    x = 1,754.61

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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.