Home / 3,101.70-4,653.18-1,021.80

Finding the Fourth Proportional to 3,101.70, 4,653.18 and 1,021.80

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Solution

The fourth proportional to 3,101.70, 4,653.18 and 1,021.80 is: 1,532.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.70 : 4,653.18 = 1,021.80 : x
  2. Step 2: Convert to fraction form
    3,101.70/4,653.18 = 1,021.80/x
  3. Step 3: Cross multiply
    3,101.70x = 4,653.18 × 1,021.80
  4. Step 4: Simplify right side
    3,101.70x = 4,754,619.32
  5. Step 5: Solve for x
    x = 4,754,619.32/3,101.70
  6. Step 6: Final answer
    x = 1,532.91

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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.