Home / 3,631.08-5,403.16-3,618.78

Finding the Fourth Proportional to 3,631.08, 5,403.16 and 3,618.78

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Solution

The fourth proportional to 3,631.08, 5,403.16 and 3,618.78 is: 5,384.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,631.08 : 5,403.16 = 3,618.78 : x
  2. Step 2: Convert to fraction form
    3,631.08/5,403.16 = 3,618.78/x
  3. Step 3: Cross multiply
    3,631.08x = 5,403.16 × 3,618.78
  4. Step 4: Simplify right side
    3,631.08x = 19,552,811.25
  5. Step 5: Solve for x
    x = 19,552,811.25/3,631.08
  6. Step 6: Final answer
    x = 5,384.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.