Home / 3,215.82-4,789.14-3,106.46

Finding the Fourth Proportional to 3,215.82, 4,789.14 and 3,106.46

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Solution

The fourth proportional to 3,215.82, 4,789.14 and 3,106.46 is: 4,626.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.82 : 4,789.14 = 3,106.46 : x
  2. Step 2: Convert to fraction form
    3,215.82/4,789.14 = 3,106.46/x
  3. Step 3: Cross multiply
    3,215.82x = 4,789.14 × 3,106.46
  4. Step 4: Simplify right side
    3,215.82x = 14,877,271.84
  5. Step 5: Solve for x
    x = 14,877,271.84/3,215.82
  6. Step 6: Final answer
    x = 4,626.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.