Home / 4,212.09-6,318.52-2,130.80

Finding the Fourth Proportional to 4,212.09, 6,318.52 and 2,130.80

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Solution

The fourth proportional to 4,212.09, 6,318.52 and 2,130.80 is: 3,196.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212.09 : 6,318.52 = 2,130.80 : x
  2. Step 2: Convert to fraction form
    4,212.09/6,318.52 = 2,130.80/x
  3. Step 3: Cross multiply
    4,212.09x = 6,318.52 × 2,130.80
  4. Step 4: Simplify right side
    4,212.09x = 13,463,465.50
  5. Step 5: Solve for x
    x = 13,463,465.50/4,212.09
  6. Step 6: Final answer
    x = 3,196.39

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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.