Home / 5,397.07-7,447.97-3,128.85

Finding the Fourth Proportional to 5,397.07, 7,447.97 and 3,128.85

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Solution

The fourth proportional to 5,397.07, 7,447.97 and 3,128.85 is: 4,317.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,397.07 : 7,447.97 = 3,128.85 : x
  2. Step 2: Convert to fraction form
    5,397.07/7,447.97 = 3,128.85/x
  3. Step 3: Cross multiply
    5,397.07x = 7,447.97 × 3,128.85
  4. Step 4: Simplify right side
    5,397.07x = 23,303,577.02
  5. Step 5: Solve for x
    x = 23,303,577.02/5,397.07
  6. Step 6: Final answer
    x = 4,317.82

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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.