Home / 3,000.20-4,140.48-1,821.08

Finding the Fourth Proportional to 3,000.20, 4,140.48 and 1,821.08

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Solution

The fourth proportional to 3,000.20, 4,140.48 and 1,821.08 is: 2,513.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,000.20 : 4,140.48 = 1,821.08 : x
  2. Step 2: Convert to fraction form
    3,000.20/4,140.48 = 1,821.08/x
  3. Step 3: Cross multiply
    3,000.20x = 4,140.48 × 1,821.08
  4. Step 4: Simplify right side
    3,000.20x = 7,540,145.32
  5. Step 5: Solve for x
    x = 7,540,145.32/3,000.20
  6. Step 6: Final answer
    x = 2,513.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.