Home / 3,173.58-4,387.90-2,779.48

Finding the Fourth Proportional to 3,173.58, 4,387.90 and 2,779.48

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Solution

The fourth proportional to 3,173.58, 4,387.90 and 2,779.48 is: 3,843.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,173.58 : 4,387.90 = 2,779.48 : x
  2. Step 2: Convert to fraction form
    3,173.58/4,387.90 = 2,779.48/x
  3. Step 3: Cross multiply
    3,173.58x = 4,387.90 × 2,779.48
  4. Step 4: Simplify right side
    3,173.58x = 12,196,077.80
  5. Step 5: Solve for x
    x = 12,196,077.80/3,173.58
  6. Step 6: Final answer
    x = 3,843.00

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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.