Home / 3,878.10-5,351.37-2,305.98

Finding the Fourth Proportional to 3,878.10, 5,351.37 and 2,305.98

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Solution

The fourth proportional to 3,878.10, 5,351.37 and 2,305.98 is: 3,182.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.10 : 5,351.37 = 2,305.98 : x
  2. Step 2: Convert to fraction form
    3,878.10/5,351.37 = 2,305.98/x
  3. Step 3: Cross multiply
    3,878.10x = 5,351.37 × 2,305.98
  4. Step 4: Simplify right side
    3,878.10x = 12,340,152.19
  5. Step 5: Solve for x
    x = 12,340,152.19/3,878.10
  6. Step 6: Final answer
    x = 3,182.01

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1.5x scale

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.