Home / 2,687.08-4,031.84-2,643.36

Finding the Fourth Proportional to 2,687.08, 4,031.84 and 2,643.36

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Solution

The fourth proportional to 2,687.08, 4,031.84 and 2,643.36 is: 3,966.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.08 : 4,031.84 = 2,643.36 : x
  2. Step 2: Convert to fraction form
    2,687.08/4,031.84 = 2,643.36/x
  3. Step 3: Cross multiply
    2,687.08x = 4,031.84 × 2,643.36
  4. Step 4: Simplify right side
    2,687.08x = 10,657,604.58
  5. Step 5: Solve for x
    x = 10,657,604.58/2,687.08
  6. Step 6: Final answer
    x = 3,966.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.