Home / 2,156.50-3,237-1,911.27

Finding the Fourth Proportional to 2,156.50, 3,237 and 1,911.27

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Solution

The fourth proportional to 2,156.50, 3,237 and 1,911.27 is: 2,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.50 : 3,237 = 1,911.27 : x
  2. Step 2: Convert to fraction form
    2,156.50/3,237 = 1,911.27/x
  3. Step 3: Cross multiply
    2,156.50x = 3,237 × 1,911.27
  4. Step 4: Simplify right side
    2,156.50x = 6,186,764.81
  5. Step 5: Solve for x
    x = 6,186,764.81/2,156.50
  6. Step 6: Final answer
    x = 2,868.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.