Home / 3,015.30-4,519.84-1,261.32

Finding the Fourth Proportional to 3,015.30, 4,519.84 and 1,261.32

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Solution

The fourth proportional to 3,015.30, 4,519.84 and 1,261.32 is: 1,890.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,015.30 : 4,519.84 = 1,261.32 : x
  2. Step 2: Convert to fraction form
    3,015.30/4,519.84 = 1,261.32/x
  3. Step 3: Cross multiply
    3,015.30x = 4,519.84 × 1,261.32
  4. Step 4: Simplify right side
    3,015.30x = 5,700,964.59
  5. Step 5: Solve for x
    x = 5,700,964.59/3,015.30
  6. Step 6: Final answer
    x = 1,890.68

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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.