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Finding the Fourth Proportional to 9,503, 13,114.55 and 5,311.25

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Solution

The fourth proportional to 9,503, 13,114.55 and 5,311.25 is: 7,329.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,503 : 13,114.55 = 5,311.25 : x
  2. Step 2: Convert to fraction form
    9,503/13,114.55 = 5,311.25/x
  3. Step 3: Cross multiply
    9,503x = 13,114.55 × 5,311.25
  4. Step 4: Simplify right side
    9,503x = 69,654,627.13
  5. Step 5: Solve for x
    x = 69,654,627.13/9,503
  6. Step 6: Final answer
    x = 7,329.75

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Double scale
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Similar ratio
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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.