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Finding the Fourth Proportional to 8,960.56, 12,357.06 and 5,374.96

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Solution

The fourth proportional to 8,960.56, 12,357.06 and 5,374.96 is: 7,412.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.56 : 12,357.06 = 5,374.96 : x
  2. Step 2: Convert to fraction form
    8,960.56/12,357.06 = 5,374.96/x
  3. Step 3: Cross multiply
    8,960.56x = 12,357.06 × 5,374.96
  4. Step 4: Simplify right side
    8,960.56x = 66,418,703.22
  5. Step 5: Solve for x
    x = 66,418,703.22/8,960.56
  6. Step 6: Final answer
    x = 7,412.34

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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.