Home / 7,439.10-11,156.91-2,172.75

Finding the Fourth Proportional to 7,439.10, 11,156.91 and 2,172.75

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Solution

The fourth proportional to 7,439.10, 11,156.91 and 2,172.75 is: 3,258.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,439.10 : 11,156.91 = 2,172.75 : x
  2. Step 2: Convert to fraction form
    7,439.10/11,156.91 = 2,172.75/x
  3. Step 3: Cross multiply
    7,439.10x = 11,156.91 × 2,172.75
  4. Step 4: Simplify right side
    7,439.10x = 24,241,176.20
  5. Step 5: Solve for x
    x = 24,241,176.20/7,439.10
  6. Step 6: Final answer
    x = 3,258.62

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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.