Home / 5,429.21-8,135.10-3,343.05

Finding the Fourth Proportional to 5,429.21, 8,135.10 and 3,343.05

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Solution

The fourth proportional to 5,429.21, 8,135.10 and 3,343.05 is: 5,009.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429.21 : 8,135.10 = 3,343.05 : x
  2. Step 2: Convert to fraction form
    5,429.21/8,135.10 = 3,343.05/x
  3. Step 3: Cross multiply
    5,429.21x = 8,135.10 × 3,343.05
  4. Step 4: Simplify right side
    5,429.21x = 27,196,046.06
  5. Step 5: Solve for x
    x = 27,196,046.06/5,429.21
  6. Step 6: Final answer
    x = 5,009.21

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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.