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Finding the Fourth Proportional to 6,392.79, 9,576.43 and 5,078.77

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Solution

The fourth proportional to 6,392.79, 9,576.43 and 5,078.77 is: 7,608.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,392.79 : 9,576.43 = 5,078.77 : x
  2. Step 2: Convert to fraction form
    6,392.79/9,576.43 = 5,078.77/x
  3. Step 3: Cross multiply
    6,392.79x = 9,576.43 × 5,078.77
  4. Step 4: Simplify right side
    6,392.79x = 48,636,448.75
  5. Step 5: Solve for x
    x = 48,636,448.75/6,392.79
  6. Step 6: Final answer
    x = 7,608.02

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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.