Home / 2,815.58-3,885.42-1,556.64

Finding the Fourth Proportional to 2,815.58, 3,885.42 and 1,556.64

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Solution

The fourth proportional to 2,815.58, 3,885.42 and 1,556.64 is: 2,148.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.58 : 3,885.42 = 1,556.64 : x
  2. Step 2: Convert to fraction form
    2,815.58/3,885.42 = 1,556.64/x
  3. Step 3: Cross multiply
    2,815.58x = 3,885.42 × 1,556.64
  4. Step 4: Simplify right side
    2,815.58x = 6,048,200.19
  5. Step 5: Solve for x
    x = 6,048,200.19/2,815.58
  6. Step 6: Final answer
    x = 2,148.12

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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.