Home / 8,215.64-12,313.20-4,515.56

Finding the Fourth Proportional to 8,215.64, 12,313.20 and 4,515.56

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Solution

The fourth proportional to 8,215.64, 12,313.20 and 4,515.56 is: 6,767.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.64 : 12,313.20 = 4,515.56 : x
  2. Step 2: Convert to fraction form
    8,215.64/12,313.20 = 4,515.56/x
  3. Step 3: Cross multiply
    8,215.64x = 12,313.20 × 4,515.56
  4. Step 4: Simplify right side
    8,215.64x = 55,600,993.39
  5. Step 5: Solve for x
    x = 55,600,993.39/8,215.64
  6. Step 6: Final answer
    x = 6,767.70

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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.