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Finding the Fourth Proportional to 9,343.32, 12,918.39 and 8,930.22

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Solution

The fourth proportional to 9,343.32, 12,918.39 and 8,930.22 is: 12,347.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,343.32 : 12,918.39 = 8,930.22 : x
  2. Step 2: Convert to fraction form
    9,343.32/12,918.39 = 8,930.22/x
  3. Step 3: Cross multiply
    9,343.32x = 12,918.39 × 8,930.22
  4. Step 4: Simplify right side
    9,343.32x = 115,364,064.75
  5. Step 5: Solve for x
    x = 115,364,064.75/9,343.32
  6. Step 6: Final answer
    x = 12,347.22

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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.