Home / 3,670.65-5,505.98-2,115.45

Finding the Fourth Proportional to 3,670.65, 5,505.98 and 2,115.45

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Solution

The fourth proportional to 3,670.65, 5,505.98 and 2,115.45 is: 3,173.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,670.65 : 5,505.98 = 2,115.45 : x
  2. Step 2: Convert to fraction form
    3,670.65/5,505.98 = 2,115.45/x
  3. Step 3: Cross multiply
    3,670.65x = 5,505.98 × 2,115.45
  4. Step 4: Simplify right side
    3,670.65x = 11,647,614.81
  5. Step 5: Solve for x
    x = 11,647,614.81/3,670.65
  6. Step 6: Final answer
    x = 3,173.18

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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.