Home / 4,878.35-7,321.61-2,107.10

Finding the Fourth Proportional to 4,878.35, 7,321.61 and 2,107.10

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Solution

The fourth proportional to 4,878.35, 7,321.61 and 2,107.10 is: 3,162.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.35 : 7,321.61 = 2,107.10 : x
  2. Step 2: Convert to fraction form
    4,878.35/7,321.61 = 2,107.10/x
  3. Step 3: Cross multiply
    4,878.35x = 7,321.61 × 2,107.10
  4. Step 4: Simplify right side
    4,878.35x = 15,427,333.09
  5. Step 5: Solve for x
    x = 15,427,333.09/4,878.35
  6. Step 6: Final answer
    x = 3,162.41

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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.