Home / 7,335.37-10,122.81-3,978.18

Finding the Fourth Proportional to 7,335.37, 10,122.81 and 3,978.18

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Solution

The fourth proportional to 7,335.37, 10,122.81 and 3,978.18 is: 5,489.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,335.37 : 10,122.81 = 3,978.18 : x
  2. Step 2: Convert to fraction form
    7,335.37/10,122.81 = 3,978.18/x
  3. Step 3: Cross multiply
    7,335.37x = 10,122.81 × 3,978.18
  4. Step 4: Simplify right side
    7,335.37x = 40,270,319.44
  5. Step 5: Solve for x
    x = 40,270,319.44/7,335.37
  6. Step 6: Final answer
    x = 5,489.88

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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.