Home / 7,189.22-9,920.74-4,045.61

Finding the Fourth Proportional to 7,189.22, 9,920.74 and 4,045.61

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Solution

The fourth proportional to 7,189.22, 9,920.74 and 4,045.61 is: 5,582.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.22 : 9,920.74 = 4,045.61 : x
  2. Step 2: Convert to fraction form
    7,189.22/9,920.74 = 4,045.61/x
  3. Step 3: Cross multiply
    7,189.22x = 9,920.74 × 4,045.61
  4. Step 4: Simplify right side
    7,189.22x = 40,135,444.95
  5. Step 5: Solve for x
    x = 40,135,444.95/7,189.22
  6. Step 6: Final answer
    x = 5,582.73

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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.