Home / 7,299.10-10,940.55-3,138.40

Finding the Fourth Proportional to 7,299.10, 10,940.55 and 3,138.40

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Solution

The fourth proportional to 7,299.10, 10,940.55 and 3,138.40 is: 4,704.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,299.10 : 10,940.55 = 3,138.40 : x
  2. Step 2: Convert to fraction form
    7,299.10/10,940.55 = 3,138.40/x
  3. Step 3: Cross multiply
    7,299.10x = 10,940.55 × 3,138.40
  4. Step 4: Simplify right side
    7,299.10x = 34,335,822.12
  5. Step 5: Solve for x
    x = 34,335,822.12/7,299.10
  6. Step 6: Final answer
    x = 4,704.12

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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.