Home / 3,840.52-5,292.90-2,790.76

Finding the Fourth Proportional to 3,840.52, 5,292.90 and 2,790.76

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Solution

The fourth proportional to 3,840.52, 5,292.90 and 2,790.76 is: 3,846.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.52 : 5,292.90 = 2,790.76 : x
  2. Step 2: Convert to fraction form
    3,840.52/5,292.90 = 2,790.76/x
  3. Step 3: Cross multiply
    3,840.52x = 5,292.90 × 2,790.76
  4. Step 4: Simplify right side
    3,840.52x = 14,771,213.60
  5. Step 5: Solve for x
    x = 14,771,213.60/3,840.52
  6. Step 6: Final answer
    x = 3,846.15

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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.