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Finding the Fourth Proportional to 7,900.29, 10,904.49 and 4,914.43

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Solution

The fourth proportional to 7,900.29, 10,904.49 and 4,914.43 is: 6,783.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,900.29 : 10,904.49 = 4,914.43 : x
  2. Step 2: Convert to fraction form
    7,900.29/10,904.49 = 4,914.43/x
  3. Step 3: Cross multiply
    7,900.29x = 10,904.49 × 4,914.43
  4. Step 4: Simplify right side
    7,900.29x = 53,589,325.53
  5. Step 5: Solve for x
    x = 53,589,325.53/7,900.29
  6. Step 6: Final answer
    x = 6,783.21

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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.