Home / 4,325.20-6,487.80-2,138.20

Finding the Fourth Proportional to 4,325.20, 6,487.80 and 2,138.20

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Solution

The fourth proportional to 4,325.20, 6,487.80 and 2,138.20 is: 3,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,325.20 : 6,487.80 = 2,138.20 : x
  2. Step 2: Convert to fraction form
    4,325.20/6,487.80 = 2,138.20/x
  3. Step 3: Cross multiply
    4,325.20x = 6,487.80 × 2,138.20
  4. Step 4: Simplify right side
    4,325.20x = 13,872,213.96
  5. Step 5: Solve for x
    x = 13,872,213.96/4,325.20
  6. Step 6: Final answer
    x = 3,207.30

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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.