Home / 3,421.05-4,720.86-2,162.31

Finding the Fourth Proportional to 3,421.05, 4,720.86 and 2,162.31

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Solution

The fourth proportional to 3,421.05, 4,720.86 and 2,162.31 is: 2,983.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.05 : 4,720.86 = 2,162.31 : x
  2. Step 2: Convert to fraction form
    3,421.05/4,720.86 = 2,162.31/x
  3. Step 3: Cross multiply
    3,421.05x = 4,720.86 × 2,162.31
  4. Step 4: Simplify right side
    3,421.05x = 10,207,962.79
  5. Step 5: Solve for x
    x = 10,207,962.79/3,421.05
  6. Step 6: Final answer
    x = 2,983.87

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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.