Home / 3,421.67-4,722.64-2,161.93

Finding the Fourth Proportional to 3,421.67, 4,722.64 and 2,161.93

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Solution

The fourth proportional to 3,421.67, 4,722.64 and 2,161.93 is: 2,983.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.67 : 4,722.64 = 2,161.93 : x
  2. Step 2: Convert to fraction form
    3,421.67/4,722.64 = 2,161.93/x
  3. Step 3: Cross multiply
    3,421.67x = 4,722.64 × 2,161.93
  4. Step 4: Simplify right side
    3,421.67x = 10,210,007.99
  5. Step 5: Solve for x
    x = 10,210,007.99/3,421.67
  6. Step 6: Final answer
    x = 2,983.92

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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.