Home / 3,206.63-4,420.86-2,878.58

Finding the Fourth Proportional to 3,206.63, 4,420.86 and 2,878.58

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Solution

The fourth proportional to 3,206.63, 4,420.86 and 2,878.58 is: 3,968.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,206.63 : 4,420.86 = 2,878.58 : x
  2. Step 2: Convert to fraction form
    3,206.63/4,420.86 = 2,878.58/x
  3. Step 3: Cross multiply
    3,206.63x = 4,420.86 × 2,878.58
  4. Step 4: Simplify right side
    3,206.63x = 12,725,777.07
  5. Step 5: Solve for x
    x = 12,725,777.07/3,206.63
  6. Step 6: Final answer
    x = 3,968.59

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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.