Home / 3,101.80-4,651.72-1,021.32

Finding the Fourth Proportional to 3,101.80, 4,651.72 and 1,021.32

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Solution

The fourth proportional to 3,101.80, 4,651.72 and 1,021.32 is: 1,531.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.80 : 4,651.72 = 1,021.32 : x
  2. Step 2: Convert to fraction form
    3,101.80/4,651.72 = 1,021.32/x
  3. Step 3: Cross multiply
    3,101.80x = 4,651.72 × 1,021.32
  4. Step 4: Simplify right side
    3,101.80x = 4,750,894.67
  5. Step 5: Solve for x
    x = 4,750,894.67/3,101.80
  6. Step 6: Final answer
    x = 1,531.66

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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.