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Finding the Fourth Proportional to 7,222.91, 9,967.47 and 4,079.03

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Solution

The fourth proportional to 7,222.91, 9,967.47 and 4,079.03 is: 5,628.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.91 : 9,967.47 = 4,079.03 : x
  2. Step 2: Convert to fraction form
    7,222.91/9,967.47 = 4,079.03/x
  3. Step 3: Cross multiply
    7,222.91x = 9,967.47 × 4,079.03
  4. Step 4: Simplify right side
    7,222.91x = 40,657,609.15
  5. Step 5: Solve for x
    x = 40,657,609.15/7,222.91
  6. Step 6: Final answer
    x = 5,628.98

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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.