Home / 3,419.10-5,128.65-1,863.90

Finding the Fourth Proportional to 3,419.10, 5,128.65 and 1,863.90

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Solution

The fourth proportional to 3,419.10, 5,128.65 and 1,863.90 is: 2,795.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.10 : 5,128.65 = 1,863.90 : x
  2. Step 2: Convert to fraction form
    3,419.10/5,128.65 = 1,863.90/x
  3. Step 3: Cross multiply
    3,419.10x = 5,128.65 × 1,863.90
  4. Step 4: Simplify right side
    3,419.10x = 9,559,290.74
  5. Step 5: Solve for x
    x = 9,559,290.74/3,419.10
  6. Step 6: Final answer
    x = 2,795.85

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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.