Home / 3,005.07-4,146.59-1,678.83

Finding the Fourth Proportional to 3,005.07, 4,146.59 and 1,678.83

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Solution

The fourth proportional to 3,005.07, 4,146.59 and 1,678.83 is: 2,316.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.07 : 4,146.59 = 1,678.83 : x
  2. Step 2: Convert to fraction form
    3,005.07/4,146.59 = 1,678.83/x
  3. Step 3: Cross multiply
    3,005.07x = 4,146.59 × 1,678.83
  4. Step 4: Simplify right side
    3,005.07x = 6,961,408.34
  5. Step 5: Solve for x
    x = 6,961,408.34/3,005.07
  6. Step 6: Final answer
    x = 2,316.56

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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.