Home / 4,218.12-6,327.90-1,908.36

Finding the Fourth Proportional to 4,218.12, 6,327.90 and 1,908.36

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Solution

The fourth proportional to 4,218.12, 6,327.90 and 1,908.36 is: 2,862.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,218.12 : 6,327.90 = 1,908.36 : x
  2. Step 2: Convert to fraction form
    4,218.12/6,327.90 = 1,908.36/x
  3. Step 3: Cross multiply
    4,218.12x = 6,327.90 × 1,908.36
  4. Step 4: Simplify right side
    4,218.12x = 12,075,911.24
  5. Step 5: Solve for x
    x = 12,075,911.24/4,218.12
  6. Step 6: Final answer
    x = 2,862.87

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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.