Home / 3,121.05-4,677.54-1,270

Finding the Fourth Proportional to 3,121.05, 4,677.54 and 1,270

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Solution

The fourth proportional to 3,121.05, 4,677.54 and 1,270 is: 1,903.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.05 : 4,677.54 = 1,270 : x
  2. Step 2: Convert to fraction form
    3,121.05/4,677.54 = 1,270/x
  3. Step 3: Cross multiply
    3,121.05x = 4,677.54 × 1,270
  4. Step 4: Simplify right side
    3,121.05x = 5,940,475.80
  5. Step 5: Solve for x
    x = 5,940,475.80/3,121.05
  6. Step 6: Final answer
    x = 1,903.36

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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.