Home / 3,213.10-4,430.18-2,216.80

Finding the Fourth Proportional to 3,213.10, 4,430.18 and 2,216.80

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Solution

The fourth proportional to 3,213.10, 4,430.18 and 2,216.80 is: 3,056.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.10 : 4,430.18 = 2,216.80 : x
  2. Step 2: Convert to fraction form
    3,213.10/4,430.18 = 2,216.80/x
  3. Step 3: Cross multiply
    3,213.10x = 4,430.18 × 2,216.80
  4. Step 4: Simplify right side
    3,213.10x = 9,820,823.02
  5. Step 5: Solve for x
    x = 9,820,823.02/3,213.10
  6. Step 6: Final answer
    x = 3,056.49

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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.