Home / 4,079.84-5,629.76-2,311.60

Finding the Fourth Proportional to 4,079.84, 5,629.76 and 2,311.60

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Solution

The fourth proportional to 4,079.84, 5,629.76 and 2,311.60 is: 3,189.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079.84 : 5,629.76 = 2,311.60 : x
  2. Step 2: Convert to fraction form
    4,079.84/5,629.76 = 2,311.60/x
  3. Step 3: Cross multiply
    4,079.84x = 5,629.76 × 2,311.60
  4. Step 4: Simplify right side
    4,079.84x = 13,013,753.22
  5. Step 5: Solve for x
    x = 13,013,753.22/4,079.84
  6. Step 6: Final answer
    x = 3,189.77

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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.