Home / 3,212.40-4,814.10-2,555.40

Finding the Fourth Proportional to 3,212.40, 4,814.10 and 2,555.40

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Solution

The fourth proportional to 3,212.40, 4,814.10 and 2,555.40 is: 3,829.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.40 : 4,814.10 = 2,555.40 : x
  2. Step 2: Convert to fraction form
    3,212.40/4,814.10 = 2,555.40/x
  3. Step 3: Cross multiply
    3,212.40x = 4,814.10 × 2,555.40
  4. Step 4: Simplify right side
    3,212.40x = 12,301,951.14
  5. Step 5: Solve for x
    x = 12,301,951.14/3,212.40
  6. Step 6: Final answer
    x = 3,829.52

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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.