Home / 3,070.80-4,231.80-2,873.16

Finding the Fourth Proportional to 3,070.80, 4,231.80 and 2,873.16

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Solution

The fourth proportional to 3,070.80, 4,231.80 and 2,873.16 is: 3,959.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,070.80 : 4,231.80 = 2,873.16 : x
  2. Step 2: Convert to fraction form
    3,070.80/4,231.80 = 2,873.16/x
  3. Step 3: Cross multiply
    3,070.80x = 4,231.80 × 2,873.16
  4. Step 4: Simplify right side
    3,070.80x = 12,158,638.49
  5. Step 5: Solve for x
    x = 12,158,638.49/3,070.80
  6. Step 6: Final answer
    x = 3,959.44

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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.