Home / 12,863.10-19,297.35-3,977.70

Finding the Fourth Proportional to 12,863.10, 19,297.35 and 3,977.70

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Solution

The fourth proportional to 12,863.10, 19,297.35 and 3,977.70 is: 5,967.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,863.10 : 19,297.35 = 3,977.70 : x
  2. Step 2: Convert to fraction form
    12,863.10/19,297.35 = 3,977.70/x
  3. Step 3: Cross multiply
    12,863.10x = 19,297.35 × 3,977.70
  4. Step 4: Simplify right side
    12,863.10x = 76,759,069.10
  5. Step 5: Solve for x
    x = 76,759,069.10/12,863.10
  6. Step 6: Final answer
    x = 5,967.38

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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.