Home / 7,290.14-10,060.38-3,978.14

Finding the Fourth Proportional to 7,290.14, 10,060.38 and 3,978.14

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Solution

The fourth proportional to 7,290.14, 10,060.38 and 3,978.14 is: 5,489.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,290.14 : 10,060.38 = 3,978.14 : x
  2. Step 2: Convert to fraction form
    7,290.14/10,060.38 = 3,978.14/x
  3. Step 3: Cross multiply
    7,290.14x = 10,060.38 × 3,978.14
  4. Step 4: Simplify right side
    7,290.14x = 40,021,600.09
  5. Step 5: Solve for x
    x = 40,021,600.09/7,290.14
  6. Step 6: Final answer
    x = 5,489.83

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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.