Home / 7,820.48-11,732.88-6,960.80

Finding the Fourth Proportional to 7,820.48, 11,732.88 and 6,960.80

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Solution

The fourth proportional to 7,820.48, 11,732.88 and 6,960.80 is: 10,443.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,820.48 : 11,732.88 = 6,960.80 : x
  2. Step 2: Convert to fraction form
    7,820.48/11,732.88 = 6,960.80/x
  3. Step 3: Cross multiply
    7,820.48x = 11,732.88 × 6,960.80
  4. Step 4: Simplify right side
    7,820.48x = 81,670,231.10
  5. Step 5: Solve for x
    x = 81,670,231.10/7,820.48
  6. Step 6: Final answer
    x = 10,443.12

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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.