Home / 7,619.78-10,512.39-4,634.48

Finding the Fourth Proportional to 7,619.78, 10,512.39 and 4,634.48

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Solution

The fourth proportional to 7,619.78, 10,512.39 and 4,634.48 is: 6,393.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,619.78 : 10,512.39 = 4,634.48 : x
  2. Step 2: Convert to fraction form
    7,619.78/10,512.39 = 4,634.48/x
  3. Step 3: Cross multiply
    7,619.78x = 10,512.39 × 4,634.48
  4. Step 4: Simplify right side
    7,619.78x = 48,719,461.21
  5. Step 5: Solve for x
    x = 48,719,461.21/7,619.78
  6. Step 6: Final answer
    x = 6,393.81

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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.