Home / 7,928.81-10,942.09-4,392.02

Finding the Fourth Proportional to 7,928.81, 10,942.09 and 4,392.02

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Solution

The fourth proportional to 7,928.81, 10,942.09 and 4,392.02 is: 6,061.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.81 : 10,942.09 = 4,392.02 : x
  2. Step 2: Convert to fraction form
    7,928.81/10,942.09 = 4,392.02/x
  3. Step 3: Cross multiply
    7,928.81x = 10,942.09 × 4,392.02
  4. Step 4: Simplify right side
    7,928.81x = 48,057,812.43
  5. Step 5: Solve for x
    x = 48,057,812.43/7,928.81
  6. Step 6: Final answer
    x = 6,061.17

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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.