Home / 3,678.63-5,073.01-2,420.75

Finding the Fourth Proportional to 3,678.63, 5,073.01 and 2,420.75

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Solution

The fourth proportional to 3,678.63, 5,073.01 and 2,420.75 is: 3,338.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.63 : 5,073.01 = 2,420.75 : x
  2. Step 2: Convert to fraction form
    3,678.63/5,073.01 = 2,420.75/x
  3. Step 3: Cross multiply
    3,678.63x = 5,073.01 × 2,420.75
  4. Step 4: Simplify right side
    3,678.63x = 12,280,488.96
  5. Step 5: Solve for x
    x = 12,280,488.96/3,678.63
  6. Step 6: Final answer
    x = 3,338.33

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Half scale
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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.