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Finding the Fourth Proportional to 7,104.03, 9,803.61 and 4,121.64

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Solution

The fourth proportional to 7,104.03, 9,803.61 and 4,121.64 is: 5,687.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,104.03 : 9,803.61 = 4,121.64 : x
  2. Step 2: Convert to fraction form
    7,104.03/9,803.61 = 4,121.64/x
  3. Step 3: Cross multiply
    7,104.03x = 9,803.61 × 4,121.64
  4. Step 4: Simplify right side
    7,104.03x = 40,406,951.12
  5. Step 5: Solve for x
    x = 40,406,951.12/7,104.03
  6. Step 6: Final answer
    x = 5,687.89

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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.