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Finding the Fourth Proportional to 9,319, 13,978.92 and 3,474.16

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Solution

The fourth proportional to 9,319, 13,978.92 and 3,474.16 is: 5,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319 : 13,978.92 = 3,474.16 : x
  2. Step 2: Convert to fraction form
    9,319/13,978.92 = 3,474.16/x
  3. Step 3: Cross multiply
    9,319x = 13,978.92 × 3,474.16
  4. Step 4: Simplify right side
    9,319x = 48,565,004.71
  5. Step 5: Solve for x
    x = 48,565,004.71/9,319
  6. Step 6: Final answer
    x = 5,211.40

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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.