Home / 7,836.97-10,812.81-4,478.71

Finding the Fourth Proportional to 7,836.97, 10,812.81 and 4,478.71

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Solution

The fourth proportional to 7,836.97, 10,812.81 and 4,478.71 is: 6,179.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,836.97 : 10,812.81 = 4,478.71 : x
  2. Step 2: Convert to fraction form
    7,836.97/10,812.81 = 4,478.71/x
  3. Step 3: Cross multiply
    7,836.97x = 10,812.81 × 4,478.71
  4. Step 4: Simplify right side
    7,836.97x = 48,427,440.28
  5. Step 5: Solve for x
    x = 48,427,440.28/7,836.97
  6. Step 6: Final answer
    x = 6,179.36

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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.