Home / 8,120.55-11,211.57-6,632.04

Finding the Fourth Proportional to 8,120.55, 11,211.57 and 6,632.04

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Solution

The fourth proportional to 8,120.55, 11,211.57 and 6,632.04 is: 9,156.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.55 : 11,211.57 = 6,632.04 : x
  2. Step 2: Convert to fraction form
    8,120.55/11,211.57 = 6,632.04/x
  3. Step 3: Cross multiply
    8,120.55x = 11,211.57 × 6,632.04
  4. Step 4: Simplify right side
    8,120.55x = 74,355,580.70
  5. Step 5: Solve for x
    x = 74,355,580.70/8,120.55
  6. Step 6: Final answer
    x = 9,156.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.