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Finding the Fourth Proportional to 9,439.75, 13,026.90 and 5,248

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Solution

The fourth proportional to 9,439.75, 13,026.90 and 5,248 is: 7,242.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,439.75 : 13,026.90 = 5,248 : x
  2. Step 2: Convert to fraction form
    9,439.75/13,026.90 = 5,248/x
  3. Step 3: Cross multiply
    9,439.75x = 13,026.90 × 5,248
  4. Step 4: Simplify right side
    9,439.75x = 68,365,171.20
  5. Step 5: Solve for x
    x = 68,365,171.20/9,439.75
  6. Step 6: Final answer
    x = 7,242.27

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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.