Home / 5,357.39-7,392.79-2,999.21

Finding the Fourth Proportional to 5,357.39, 7,392.79 and 2,999.21

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Solution

The fourth proportional to 5,357.39, 7,392.79 and 2,999.21 is: 4,138.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,357.39 : 7,392.79 = 2,999.21 : x
  2. Step 2: Convert to fraction form
    5,357.39/7,392.79 = 2,999.21/x
  3. Step 3: Cross multiply
    5,357.39x = 7,392.79 × 2,999.21
  4. Step 4: Simplify right side
    5,357.39x = 22,172,551.93
  5. Step 5: Solve for x
    x = 22,172,551.93/5,357.39
  6. Step 6: Final answer
    x = 4,138.68

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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.