Home / 7,335.47-10,122.66-3,978.22

Finding the Fourth Proportional to 7,335.47, 10,122.66 and 3,978.22

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Solution

The fourth proportional to 7,335.47, 10,122.66 and 3,978.22 is: 5,489.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,335.47 : 10,122.66 = 3,978.22 : x
  2. Step 2: Convert to fraction form
    7,335.47/10,122.66 = 3,978.22/x
  3. Step 3: Cross multiply
    7,335.47x = 10,122.66 × 3,978.22
  4. Step 4: Simplify right side
    7,335.47x = 40,270,143.16
  5. Step 5: Solve for x
    x = 40,270,143.16/7,335.47
  6. Step 6: Final answer
    x = 5,489.79

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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.