Home / 8,215.42-12,317.04-3,281.30

Finding the Fourth Proportional to 8,215.42, 12,317.04 and 3,281.30

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Solution

The fourth proportional to 8,215.42, 12,317.04 and 3,281.30 is: 4,919.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.42 : 12,317.04 = 3,281.30 : x
  2. Step 2: Convert to fraction form
    8,215.42/12,317.04 = 3,281.30/x
  3. Step 3: Cross multiply
    8,215.42x = 12,317.04 × 3,281.30
  4. Step 4: Simplify right side
    8,215.42x = 40,415,903.35
  5. Step 5: Solve for x
    x = 40,415,903.35/8,215.42
  6. Step 6: Final answer
    x = 4,919.52

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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.