Home / 2,814.36-3,885.40-1,871.44

Finding the Fourth Proportional to 2,814.36, 3,885.40 and 1,871.44

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Solution

The fourth proportional to 2,814.36, 3,885.40 and 1,871.44 is: 2,583.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,814.36 : 3,885.40 = 1,871.44 : x
  2. Step 2: Convert to fraction form
    2,814.36/3,885.40 = 1,871.44/x
  3. Step 3: Cross multiply
    2,814.36x = 3,885.40 × 1,871.44
  4. Step 4: Simplify right side
    2,814.36x = 7,271,285.60
  5. Step 5: Solve for x
    x = 7,271,285.60/2,814.36
  6. Step 6: Final answer
    x = 2,583.64

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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.