Home / 2,815.65-4,228.46-2,672.07

Finding the Fourth Proportional to 2,815.65, 4,228.46 and 2,672.07

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Solution

The fourth proportional to 2,815.65, 4,228.46 and 2,672.07 is: 4,012.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.65 : 4,228.46 = 2,672.07 : x
  2. Step 2: Convert to fraction form
    2,815.65/4,228.46 = 2,672.07/x
  3. Step 3: Cross multiply
    2,815.65x = 4,228.46 × 2,672.07
  4. Step 4: Simplify right side
    2,815.65x = 11,298,741.11
  5. Step 5: Solve for x
    x = 11,298,741.11/2,815.65
  6. Step 6: Final answer
    x = 4,012.84

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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.