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Finding the Fourth Proportional to 6,630.78, 9,133.92 and 6,152.28

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Solution

The fourth proportional to 6,630.78, 9,133.92 and 6,152.28 is: 8,474.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,630.78 : 9,133.92 = 6,152.28 : x
  2. Step 2: Convert to fraction form
    6,630.78/9,133.92 = 6,152.28/x
  3. Step 3: Cross multiply
    6,630.78x = 9,133.92 × 6,152.28
  4. Step 4: Simplify right side
    6,630.78x = 56,194,433.34
  5. Step 5: Solve for x
    x = 56,194,433.34/6,630.78
  6. Step 6: Final answer
    x = 8,474.78

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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.