Home / 3,211.10-4,815.75-1,567.70

Finding the Fourth Proportional to 3,211.10, 4,815.75 and 1,567.70

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Solution

The fourth proportional to 3,211.10, 4,815.75 and 1,567.70 is: 2,351.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.10 : 4,815.75 = 1,567.70 : x
  2. Step 2: Convert to fraction form
    3,211.10/4,815.75 = 1,567.70/x
  3. Step 3: Cross multiply
    3,211.10x = 4,815.75 × 1,567.70
  4. Step 4: Simplify right side
    3,211.10x = 7,549,651.28
  5. Step 5: Solve for x
    x = 7,549,651.28/3,211.10
  6. Step 6: Final answer
    x = 2,351.11

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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.