Home / 7,006.50-10,515.68-3,311.40

Finding the Fourth Proportional to 7,006.50, 10,515.68 and 3,311.40

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Solution

The fourth proportional to 7,006.50, 10,515.68 and 3,311.40 is: 4,969.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,006.50 : 10,515.68 = 3,311.40 : x
  2. Step 2: Convert to fraction form
    7,006.50/10,515.68 = 3,311.40/x
  3. Step 3: Cross multiply
    7,006.50x = 10,515.68 × 3,311.40
  4. Step 4: Simplify right side
    7,006.50x = 34,821,622.75
  5. Step 5: Solve for x
    x = 34,821,622.75/7,006.50
  6. Step 6: Final answer
    x = 4,969.90

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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.