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Finding the Fourth Proportional to 3,676.55, 5,513.64 and 1,210.79

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Solution

The fourth proportional to 3,676.55, 5,513.64 and 1,210.79 is: 1,815.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,676.55 : 5,513.64 = 1,210.79 : x
  2. Step 2: Convert to fraction form
    3,676.55/5,513.64 = 1,210.79/x
  3. Step 3: Cross multiply
    3,676.55x = 5,513.64 × 1,210.79
  4. Step 4: Simplify right side
    3,676.55x = 6,675,860.18
  5. Step 5: Solve for x
    x = 6,675,860.18/3,676.55
  6. Step 6: Final answer
    x = 1,815.79

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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.