Home / 2,878.20-4,310.91-2,808.36

Finding the Fourth Proportional to 2,878.20, 4,310.91 and 2,808.36

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Solution

The fourth proportional to 2,878.20, 4,310.91 and 2,808.36 is: 4,206.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.20 : 4,310.91 = 2,808.36 : x
  2. Step 2: Convert to fraction form
    2,878.20/4,310.91 = 2,808.36/x
  3. Step 3: Cross multiply
    2,878.20x = 4,310.91 × 2,808.36
  4. Step 4: Simplify right side
    2,878.20x = 12,106,587.21
  5. Step 5: Solve for x
    x = 12,106,587.21/2,878.20
  6. Step 6: Final answer
    x = 4,206.31

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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.