Home / 7,112.09-9,814.28-4,278.83

Finding the Fourth Proportional to 7,112.09, 9,814.28 and 4,278.83

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Solution

The fourth proportional to 7,112.09, 9,814.28 and 4,278.83 is: 5,904.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.09 : 9,814.28 = 4,278.83 : x
  2. Step 2: Convert to fraction form
    7,112.09/9,814.28 = 4,278.83/x
  3. Step 3: Cross multiply
    7,112.09x = 9,814.28 × 4,278.83
  4. Step 4: Simplify right side
    7,112.09x = 41,993,565.23
  5. Step 5: Solve for x
    x = 41,993,565.23/7,112.09
  6. Step 6: Final answer
    x = 5,904.53

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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.