Home / 3,211.10-4,816.65-3,186.80

Finding the Fourth Proportional to 3,211.10, 4,816.65 and 3,186.80

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Solution

The fourth proportional to 3,211.10, 4,816.65 and 3,186.80 is: 4,780.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.10 : 4,816.65 = 3,186.80 : x
  2. Step 2: Convert to fraction form
    3,211.10/4,816.65 = 3,186.80/x
  3. Step 3: Cross multiply
    3,211.10x = 4,816.65 × 3,186.80
  4. Step 4: Simplify right side
    3,211.10x = 15,349,700.22
  5. Step 5: Solve for x
    x = 15,349,700.22/3,211.10
  6. Step 6: Final answer
    x = 4,780.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.