Home / 3,005.05-4,146.77-1,678.50

Finding the Fourth Proportional to 3,005.05, 4,146.77 and 1,678.50

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Solution

The fourth proportional to 3,005.05, 4,146.77 and 1,678.50 is: 2,316.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.05 : 4,146.77 = 1,678.50 : x
  2. Step 2: Convert to fraction form
    3,005.05/4,146.77 = 1,678.50/x
  3. Step 3: Cross multiply
    3,005.05x = 4,146.77 × 1,678.50
  4. Step 4: Simplify right side
    3,005.05x = 6,960,353.45
  5. Step 5: Solve for x
    x = 6,960,353.45/3,005.05
  6. Step 6: Final answer
    x = 2,316.22

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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.