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Finding the Fourth Proportional to 9,272.40, 13,919.40 and 4,887.60

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Solution

The fourth proportional to 9,272.40, 13,919.40 and 4,887.60 is: 7,337.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,272.40 : 13,919.40 = 4,887.60 : x
  2. Step 2: Convert to fraction form
    9,272.40/13,919.40 = 4,887.60/x
  3. Step 3: Cross multiply
    9,272.40x = 13,919.40 × 4,887.60
  4. Step 4: Simplify right side
    9,272.40x = 68,032,459.44
  5. Step 5: Solve for x
    x = 68,032,459.44/9,272.40
  6. Step 6: Final answer
    x = 7,337.09

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1.5x scale

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.