Home / 3,118.04-4,669.38-1,815.56

Finding the Fourth Proportional to 3,118.04, 4,669.38 and 1,815.56

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Solution

The fourth proportional to 3,118.04, 4,669.38 and 1,815.56 is: 2,718.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.04 : 4,669.38 = 1,815.56 : x
  2. Step 2: Convert to fraction form
    3,118.04/4,669.38 = 1,815.56/x
  3. Step 3: Cross multiply
    3,118.04x = 4,669.38 × 1,815.56
  4. Step 4: Simplify right side
    3,118.04x = 8,477,539.55
  5. Step 5: Solve for x
    x = 8,477,539.55/3,118.04
  6. Step 6: Final answer
    x = 2,718.87

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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.