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Finding the Fourth Proportional to 8,936.37, 12,330.86 and 4,957.47

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Solution

The fourth proportional to 8,936.37, 12,330.86 and 4,957.47 is: 6,840.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,936.37 : 12,330.86 = 4,957.47 : x
  2. Step 2: Convert to fraction form
    8,936.37/12,330.86 = 4,957.47/x
  3. Step 3: Cross multiply
    8,936.37x = 12,330.86 × 4,957.47
  4. Step 4: Simplify right side
    8,936.37x = 61,129,843.74
  5. Step 5: Solve for x
    x = 61,129,843.74/8,936.37
  6. Step 6: Final answer
    x = 6,840.57

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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.