Home / 2,879.60-3,973.28-1,995.12

Finding the Fourth Proportional to 2,879.60, 3,973.28 and 1,995.12

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Solution

The fourth proportional to 2,879.60, 3,973.28 and 1,995.12 is: 2,752.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.60 : 3,973.28 = 1,995.12 : x
  2. Step 2: Convert to fraction form
    2,879.60/3,973.28 = 1,995.12/x
  3. Step 3: Cross multiply
    2,879.60x = 3,973.28 × 1,995.12
  4. Step 4: Simplify right side
    2,879.60x = 7,927,170.39
  5. Step 5: Solve for x
    x = 7,927,170.39/2,879.60
  6. Step 6: Final answer
    x = 2,752.87

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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.