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Finding the Fourth Proportional to 8,356.78, 11,532.36 and 4,630.78

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Solution

The fourth proportional to 8,356.78, 11,532.36 and 4,630.78 is: 6,390.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,356.78 : 11,532.36 = 4,630.78 : x
  2. Step 2: Convert to fraction form
    8,356.78/11,532.36 = 4,630.78/x
  3. Step 3: Cross multiply
    8,356.78x = 11,532.36 × 4,630.78
  4. Step 4: Simplify right side
    8,356.78x = 53,403,822.04
  5. Step 5: Solve for x
    x = 53,403,822.04/8,356.78
  6. Step 6: Final answer
    x = 6,390.48

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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.