Home / 2,218.23-3,325.05-830.70

Finding the Fourth Proportional to 2,218.23, 3,325.05 and 830.70

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Solution

The fourth proportional to 2,218.23, 3,325.05 and 830.70 is: 1,245.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218.23 : 3,325.05 = 830.70 : x
  2. Step 2: Convert to fraction form
    2,218.23/3,325.05 = 830.70/x
  3. Step 3: Cross multiply
    2,218.23x = 3,325.05 × 830.70
  4. Step 4: Simplify right side
    2,218.23x = 2,762,119.04
  5. Step 5: Solve for x
    x = 2,762,119.04/2,218.23
  6. Step 6: Final answer
    x = 1,245.19

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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.