Home / 4,140.80-6,218.40-2,196.80

Finding the Fourth Proportional to 4,140.80, 6,218.40 and 2,196.80

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Solution

The fourth proportional to 4,140.80, 6,218.40 and 2,196.80 is: 3,299.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,140.80 : 6,218.40 = 2,196.80 : x
  2. Step 2: Convert to fraction form
    4,140.80/6,218.40 = 2,196.80/x
  3. Step 3: Cross multiply
    4,140.80x = 6,218.40 × 2,196.80
  4. Step 4: Simplify right side
    4,140.80x = 13,660,581.12
  5. Step 5: Solve for x
    x = 13,660,581.12/4,140.80
  6. Step 6: Final answer
    x = 3,299.02

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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.