Home / 3,215.20-4,814.70-2,567.20

Finding the Fourth Proportional to 3,215.20, 4,814.70 and 2,567.20

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Solution

The fourth proportional to 3,215.20, 4,814.70 and 2,567.20 is: 3,844.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.20 : 4,814.70 = 2,567.20 : x
  2. Step 2: Convert to fraction form
    3,215.20/4,814.70 = 2,567.20/x
  3. Step 3: Cross multiply
    3,215.20x = 4,814.70 × 2,567.20
  4. Step 4: Simplify right side
    3,215.20x = 12,360,297.84
  5. Step 5: Solve for x
    x = 12,360,297.84/3,215.20
  6. Step 6: Final answer
    x = 3,844.33

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1.5x scale

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.