Home / 7,817.30-11,728.48-2,887.64

Finding the Fourth Proportional to 7,817.30, 11,728.48 and 2,887.64

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Solution

The fourth proportional to 7,817.30, 11,728.48 and 2,887.64 is: 4,332.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,817.30 : 11,728.48 = 2,887.64 : x
  2. Step 2: Convert to fraction form
    7,817.30/11,728.48 = 2,887.64/x
  3. Step 3: Cross multiply
    7,817.30x = 11,728.48 × 2,887.64
  4. Step 4: Simplify right side
    7,817.30x = 33,867,627.99
  5. Step 5: Solve for x
    x = 33,867,627.99/7,817.30
  6. Step 6: Final answer
    x = 4,332.39

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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.