Home / 3,154.86-4,353.92-2,090.80

Finding the Fourth Proportional to 3,154.86, 4,353.92 and 2,090.80

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Solution

The fourth proportional to 3,154.86, 4,353.92 and 2,090.80 is: 2,885.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.86 : 4,353.92 = 2,090.80 : x
  2. Step 2: Convert to fraction form
    3,154.86/4,353.92 = 2,090.80/x
  3. Step 3: Cross multiply
    3,154.86x = 4,353.92 × 2,090.80
  4. Step 4: Simplify right side
    3,154.86x = 9,103,175.94
  5. Step 5: Solve for x
    x = 9,103,175.94/3,154.86
  6. Step 6: Final answer
    x = 2,885.45

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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.