Home / 3,651.09-5,477.42-1,311.21

Finding the Fourth Proportional to 3,651.09, 5,477.42 and 1,311.21

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Solution

The fourth proportional to 3,651.09, 5,477.42 and 1,311.21 is: 1,967.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,651.09 : 5,477.42 = 1,311.21 : x
  2. Step 2: Convert to fraction form
    3,651.09/5,477.42 = 1,311.21/x
  3. Step 3: Cross multiply
    3,651.09x = 5,477.42 × 1,311.21
  4. Step 4: Simplify right side
    3,651.09x = 7,182,041.32
  5. Step 5: Solve for x
    x = 7,182,041.32/3,651.09
  6. Step 6: Final answer
    x = 1,967.10

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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.