Home / 7,680.45-11,519.10-2,132.40

Finding the Fourth Proportional to 7,680.45, 11,519.10 and 2,132.40

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Solution

The fourth proportional to 7,680.45, 11,519.10 and 2,132.40 is: 3,198.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.45 : 11,519.10 = 2,132.40 : x
  2. Step 2: Convert to fraction form
    7,680.45/11,519.10 = 2,132.40/x
  3. Step 3: Cross multiply
    7,680.45x = 11,519.10 × 2,132.40
  4. Step 4: Simplify right side
    7,680.45x = 24,563,328.84
  5. Step 5: Solve for x
    x = 24,563,328.84/7,680.45
  6. Step 6: Final answer
    x = 3,198.16

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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.