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Finding the Fourth Proportional to 6,928, 10,392 and 3,032.40

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Solution

The fourth proportional to 6,928, 10,392 and 3,032.40 is: 4,548.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,928 : 10,392 = 3,032.40 : x
  2. Step 2: Convert to fraction form
    6,928/10,392 = 3,032.40/x
  3. Step 3: Cross multiply
    6,928x = 10,392 × 3,032.40
  4. Step 4: Simplify right side
    6,928x = 31,512,700.80
  5. Step 5: Solve for x
    x = 31,512,700.80/6,928
  6. Step 6: Final answer
    x = 4,548.60

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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.