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Finding the Fourth Proportional to 8,939.78, 12,332.46 and 7,263.08

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Solution

The fourth proportional to 8,939.78, 12,332.46 and 7,263.08 is: 10,019.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,939.78 : 12,332.46 = 7,263.08 : x
  2. Step 2: Convert to fraction form
    8,939.78/12,332.46 = 7,263.08/x
  3. Step 3: Cross multiply
    8,939.78x = 12,332.46 × 7,263.08
  4. Step 4: Simplify right side
    8,939.78x = 89,571,643.58
  5. Step 5: Solve for x
    x = 89,571,643.58/8,939.78
  6. Step 6: Final answer
    x = 10,019.45

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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.