Home / 3,215.56-4,819.80-2,103.64

Finding the Fourth Proportional to 3,215.56, 4,819.80 and 2,103.64

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Solution

The fourth proportional to 3,215.56, 4,819.80 and 2,103.64 is: 3,153.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.56 : 4,819.80 = 2,103.64 : x
  2. Step 2: Convert to fraction form
    3,215.56/4,819.80 = 2,103.64/x
  3. Step 3: Cross multiply
    3,215.56x = 4,819.80 × 2,103.64
  4. Step 4: Simplify right side
    3,215.56x = 10,139,124.07
  5. Step 5: Solve for x
    x = 10,139,124.07/3,215.56
  6. Step 6: Final answer
    x = 3,153.14

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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.