Home / 3,412.21-5,118.32-947.03

Finding the Fourth Proportional to 3,412.21, 5,118.32 and 947.03

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Solution

The fourth proportional to 3,412.21, 5,118.32 and 947.03 is: 1,420.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.21 : 5,118.32 = 947.03 : x
  2. Step 2: Convert to fraction form
    3,412.21/5,118.32 = 947.03/x
  3. Step 3: Cross multiply
    3,412.21x = 5,118.32 × 947.03
  4. Step 4: Simplify right side
    3,412.21x = 4,847,219.89
  5. Step 5: Solve for x
    x = 4,847,219.89/3,412.21
  6. Step 6: Final answer
    x = 1,420.55

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Similar ratio
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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.