Home / 2,878.18-3,973.03-1,815.73

Finding the Fourth Proportional to 2,878.18, 3,973.03 and 1,815.73

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Solution

The fourth proportional to 2,878.18, 3,973.03 and 1,815.73 is: 2,506.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.18 : 3,973.03 = 1,815.73 : x
  2. Step 2: Convert to fraction form
    2,878.18/3,973.03 = 1,815.73/x
  3. Step 3: Cross multiply
    2,878.18x = 3,973.03 × 1,815.73
  4. Step 4: Simplify right side
    2,878.18x = 7,213,935.29
  5. Step 5: Solve for x
    x = 7,213,935.29/2,878.18
  6. Step 6: Final answer
    x = 2,506.42

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1.5x scale

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.