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Finding the Fourth Proportional to 2,878.56, 3,973.08 and 1,684.11

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Solution

The fourth proportional to 2,878.56, 3,973.08 and 1,684.11 is: 2,324.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.56 : 3,973.08 = 1,684.11 : x
  2. Step 2: Convert to fraction form
    2,878.56/3,973.08 = 1,684.11/x
  3. Step 3: Cross multiply
    2,878.56x = 3,973.08 × 1,684.11
  4. Step 4: Simplify right side
    2,878.56x = 6,691,103.76
  5. Step 5: Solve for x
    x = 6,691,103.76/2,878.56
  6. Step 6: Final answer
    x = 2,324.46

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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.