Home / 3,386.55-4,676.32-2,129.71

Finding the Fourth Proportional to 3,386.55, 4,676.32 and 2,129.71

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Solution

The fourth proportional to 3,386.55, 4,676.32 and 2,129.71 is: 2,940.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.55 : 4,676.32 = 2,129.71 : x
  2. Step 2: Convert to fraction form
    3,386.55/4,676.32 = 2,129.71/x
  3. Step 3: Cross multiply
    3,386.55x = 4,676.32 × 2,129.71
  4. Step 4: Simplify right side
    3,386.55x = 9,959,205.47
  5. Step 5: Solve for x
    x = 9,959,205.47/3,386.55
  6. Step 6: Final answer
    x = 2,940.81

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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.