Home / 2,762.12-3,811.27-1,643.02

Finding the Fourth Proportional to 2,762.12, 3,811.27 and 1,643.02

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Solution

The fourth proportional to 2,762.12, 3,811.27 and 1,643.02 is: 2,267.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,762.12 : 3,811.27 = 1,643.02 : x
  2. Step 2: Convert to fraction form
    2,762.12/3,811.27 = 1,643.02/x
  3. Step 3: Cross multiply
    2,762.12x = 3,811.27 × 1,643.02
  4. Step 4: Simplify right side
    2,762.12x = 6,261,979.20
  5. Step 5: Solve for x
    x = 6,261,979.20/2,762.12
  6. Step 6: Final answer
    x = 2,267.10

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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.