Home / 3,210.62-4,423.78-2,160.86

Finding the Fourth Proportional to 3,210.62, 4,423.78 and 2,160.86

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Solution

The fourth proportional to 3,210.62, 4,423.78 and 2,160.86 is: 2,977.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.62 : 4,423.78 = 2,160.86 : x
  2. Step 2: Convert to fraction form
    3,210.62/4,423.78 = 2,160.86/x
  3. Step 3: Cross multiply
    3,210.62x = 4,423.78 × 2,160.86
  4. Step 4: Simplify right side
    3,210.62x = 9,559,169.25
  5. Step 5: Solve for x
    x = 9,559,169.25/3,210.62
  6. Step 6: Final answer
    x = 2,977.36

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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.