Home / 3,863.40-5,798.70-3,316.20

Finding the Fourth Proportional to 3,863.40, 5,798.70 and 3,316.20

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Solution

The fourth proportional to 3,863.40, 5,798.70 and 3,316.20 is: 4,977.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,863.40 : 5,798.70 = 3,316.20 : x
  2. Step 2: Convert to fraction form
    3,863.40/5,798.70 = 3,316.20/x
  3. Step 3: Cross multiply
    3,863.40x = 5,798.70 × 3,316.20
  4. Step 4: Simplify right side
    3,863.40x = 19,229,648.94
  5. Step 5: Solve for x
    x = 19,229,648.94/3,863.40
  6. Step 6: Final answer
    x = 4,977.39

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1.5x scale

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.