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Finding the Fourth Proportional to 9,305.80, 13,958.88 and 4,372.72

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Solution

The fourth proportional to 9,305.80, 13,958.88 and 4,372.72 is: 6,559.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,305.80 : 13,958.88 = 4,372.72 : x
  2. Step 2: Convert to fraction form
    9,305.80/13,958.88 = 4,372.72/x
  3. Step 3: Cross multiply
    9,305.80x = 13,958.88 × 4,372.72
  4. Step 4: Simplify right side
    9,305.80x = 61,038,182.10
  5. Step 5: Solve for x
    x = 61,038,182.10/9,305.80
  6. Step 6: Final answer
    x = 6,559.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.