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Finding the Fourth Proportional to 4,080.96, 5,655.96 and 3,890.88

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Solution

The fourth proportional to 4,080.96, 5,655.96 and 3,890.88 is: 5,392.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,080.96 : 5,655.96 = 3,890.88 : x
  2. Step 2: Convert to fraction form
    4,080.96/5,655.96 = 3,890.88/x
  3. Step 3: Cross multiply
    4,080.96x = 5,655.96 × 3,890.88
  4. Step 4: Simplify right side
    4,080.96x = 22,006,661.64
  5. Step 5: Solve for x
    x = 22,006,661.64/4,080.96
  6. Step 6: Final answer
    x = 5,392.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.