Home / 3,082.40-4,612.80-2,153.60

Finding the Fourth Proportional to 3,082.40, 4,612.80 and 2,153.60

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Solution

The fourth proportional to 3,082.40, 4,612.80 and 2,153.60 is: 3,222.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,082.40 : 4,612.80 = 2,153.60 : x
  2. Step 2: Convert to fraction form
    3,082.40/4,612.80 = 2,153.60/x
  3. Step 3: Cross multiply
    3,082.40x = 4,612.80 × 2,153.60
  4. Step 4: Simplify right side
    3,082.40x = 9,934,126.08
  5. Step 5: Solve for x
    x = 9,934,126.08/3,082.40
  6. Step 6: Final answer
    x = 3,222.85

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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.