Home / 3,261.19-4,891.79-1,312.94

Finding the Fourth Proportional to 3,261.19, 4,891.79 and 1,312.94

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Solution

The fourth proportional to 3,261.19, 4,891.79 and 1,312.94 is: 1,969.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,261.19 : 4,891.79 = 1,312.94 : x
  2. Step 2: Convert to fraction form
    3,261.19/4,891.79 = 1,312.94/x
  3. Step 3: Cross multiply
    3,261.19x = 4,891.79 × 1,312.94
  4. Step 4: Simplify right side
    3,261.19x = 6,422,626.76
  5. Step 5: Solve for x
    x = 6,422,626.76/3,261.19
  6. Step 6: Final answer
    x = 1,969.41

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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.