Home / 3,815.90-5,723.85-3,670.10

Finding the Fourth Proportional to 3,815.90, 5,723.85 and 3,670.10

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Solution

The fourth proportional to 3,815.90, 5,723.85 and 3,670.10 is: 5,505.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.90 : 5,723.85 = 3,670.10 : x
  2. Step 2: Convert to fraction form
    3,815.90/5,723.85 = 3,670.10/x
  3. Step 3: Cross multiply
    3,815.90x = 5,723.85 × 3,670.10
  4. Step 4: Simplify right side
    3,815.90x = 21,007,101.89
  5. Step 5: Solve for x
    x = 21,007,101.89/3,815.90
  6. Step 6: Final answer
    x = 5,505.15

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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.