Home / 7,221.13-9,967.39-4,698.79

Finding the Fourth Proportional to 7,221.13, 9,967.39 and 4,698.79

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Solution

The fourth proportional to 7,221.13, 9,967.39 and 4,698.79 is: 6,485.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.13 : 9,967.39 = 4,698.79 : x
  2. Step 2: Convert to fraction form
    7,221.13/9,967.39 = 4,698.79/x
  3. Step 3: Cross multiply
    7,221.13x = 9,967.39 × 4,698.79
  4. Step 4: Simplify right side
    7,221.13x = 46,834,691.86
  5. Step 5: Solve for x
    x = 46,834,691.86/7,221.13
  6. Step 6: Final answer
    x = 6,485.78

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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.