Home / 3,421.60-5,131.56-1,230.24

Finding the Fourth Proportional to 3,421.60, 5,131.56 and 1,230.24

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Solution

The fourth proportional to 3,421.60, 5,131.56 and 1,230.24 is: 1,845.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.60 : 5,131.56 = 1,230.24 : x
  2. Step 2: Convert to fraction form
    3,421.60/5,131.56 = 1,230.24/x
  3. Step 3: Cross multiply
    3,421.60x = 5,131.56 × 1,230.24
  4. Step 4: Simplify right side
    3,421.60x = 6,313,050.37
  5. Step 5: Solve for x
    x = 6,313,050.37/3,421.60
  6. Step 6: Final answer
    x = 1,845.06

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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.