Home / 3,005.43-4,147.11-1,678.92

Finding the Fourth Proportional to 3,005.43, 4,147.11 and 1,678.92

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Solution

The fourth proportional to 3,005.43, 4,147.11 and 1,678.92 is: 2,316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.43 : 4,147.11 = 1,678.92 : x
  2. Step 2: Convert to fraction form
    3,005.43/4,147.11 = 1,678.92/x
  3. Step 3: Cross multiply
    3,005.43x = 4,147.11 × 1,678.92
  4. Step 4: Simplify right side
    3,005.43x = 6,962,665.92
  5. Step 5: Solve for x
    x = 6,962,665.92/3,005.43
  6. Step 6: Final answer
    x = 2,316.70

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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.