Home / 2,811.19-3,875.34-1,969.24

Finding the Fourth Proportional to 2,811.19, 3,875.34 and 1,969.24

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Solution

The fourth proportional to 2,811.19, 3,875.34 and 1,969.24 is: 2,714.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.19 : 3,875.34 = 1,969.24 : x
  2. Step 2: Convert to fraction form
    2,811.19/3,875.34 = 1,969.24/x
  3. Step 3: Cross multiply
    2,811.19x = 3,875.34 × 1,969.24
  4. Step 4: Simplify right side
    2,811.19x = 7,631,474.54
  5. Step 5: Solve for x
    x = 7,631,474.54/2,811.19
  6. Step 6: Final answer
    x = 2,714.68

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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.