Home / 7,680.34-11,515.38-3,000.77

Finding the Fourth Proportional to 7,680.34, 11,515.38 and 3,000.77

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Solution

The fourth proportional to 7,680.34, 11,515.38 and 3,000.77 is: 4,499.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.34 : 11,515.38 = 3,000.77 : x
  2. Step 2: Convert to fraction form
    7,680.34/11,515.38 = 3,000.77/x
  3. Step 3: Cross multiply
    7,680.34x = 11,515.38 × 3,000.77
  4. Step 4: Simplify right side
    7,680.34x = 34,555,006.84
  5. Step 5: Solve for x
    x = 34,555,006.84/7,680.34
  6. Step 6: Final answer
    x = 4,499.15

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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.