Home / 3,400.55-5,106.90-3,291.20

Finding the Fourth Proportional to 3,400.55, 5,106.90 and 3,291.20

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Solution

The fourth proportional to 3,400.55, 5,106.90 and 3,291.20 is: 4,942.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.55 : 5,106.90 = 3,291.20 : x
  2. Step 2: Convert to fraction form
    3,400.55/5,106.90 = 3,291.20/x
  3. Step 3: Cross multiply
    3,400.55x = 5,106.90 × 3,291.20
  4. Step 4: Simplify right side
    3,400.55x = 16,807,829.28
  5. Step 5: Solve for x
    x = 16,807,829.28/3,400.55
  6. Step 6: Final answer
    x = 4,942.68

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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.