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Finding the Fourth Proportional to 7,208.76, 10,804.50 and 3,312.12

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Solution

The fourth proportional to 7,208.76, 10,804.50 and 3,312.12 is: 4,964.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,208.76 : 10,804.50 = 3,312.12 : x
  2. Step 2: Convert to fraction form
    7,208.76/10,804.50 = 3,312.12/x
  3. Step 3: Cross multiply
    7,208.76x = 10,804.50 × 3,312.12
  4. Step 4: Simplify right side
    7,208.76x = 35,785,800.54
  5. Step 5: Solve for x
    x = 35,785,800.54/7,208.76
  6. Step 6: Final answer
    x = 4,964.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.