Home / 7,222.20-9,967.50-4,079.40

Finding the Fourth Proportional to 7,222.20, 9,967.50 and 4,079.40

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Solution

The fourth proportional to 7,222.20, 9,967.50 and 4,079.40 is: 5,630.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.20 : 9,967.50 = 4,079.40 : x
  2. Step 2: Convert to fraction form
    7,222.20/9,967.50 = 4,079.40/x
  3. Step 3: Cross multiply
    7,222.20x = 9,967.50 × 4,079.40
  4. Step 4: Simplify right side
    7,222.20x = 40,661,419.50
  5. Step 5: Solve for x
    x = 40,661,419.50/7,222.20
  6. Step 6: Final answer
    x = 5,630.06

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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.