Home / 3,128.27-4,316.20-1,868.77

Finding the Fourth Proportional to 3,128.27, 4,316.20 and 1,868.77

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Solution

The fourth proportional to 3,128.27, 4,316.20 and 1,868.77 is: 2,578.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.27 : 4,316.20 = 1,868.77 : x
  2. Step 2: Convert to fraction form
    3,128.27/4,316.20 = 1,868.77/x
  3. Step 3: Cross multiply
    3,128.27x = 4,316.20 × 1,868.77
  4. Step 4: Simplify right side
    3,128.27x = 8,065,985.07
  5. Step 5: Solve for x
    x = 8,065,985.07/3,128.27
  6. Step 6: Final answer
    x = 2,578.42

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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.