Home / 3,005.10-4,146.39-1,678.73

Finding the Fourth Proportional to 3,005.10, 4,146.39 and 1,678.73

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Solution

The fourth proportional to 3,005.10, 4,146.39 and 1,678.73 is: 2,316.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.10 : 4,146.39 = 1,678.73 : x
  2. Step 2: Convert to fraction form
    3,005.10/4,146.39 = 1,678.73/x
  3. Step 3: Cross multiply
    3,005.10x = 4,146.39 × 1,678.73
  4. Step 4: Simplify right side
    3,005.10x = 6,960,648.55
  5. Step 5: Solve for x
    x = 6,960,648.55/3,005.10
  6. Step 6: Final answer
    x = 2,316.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.