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Finding the Fourth Proportional to 7,889.60, 10,887.74 and 4,352.94

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Solution

The fourth proportional to 7,889.60, 10,887.74 and 4,352.94 is: 6,007.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,889.60 : 10,887.74 = 4,352.94 : x
  2. Step 2: Convert to fraction form
    7,889.60/10,887.74 = 4,352.94/x
  3. Step 3: Cross multiply
    7,889.60x = 10,887.74 × 4,352.94
  4. Step 4: Simplify right side
    7,889.60x = 47,393,678.96
  5. Step 5: Solve for x
    x = 47,393,678.96/7,889.60
  6. Step 6: Final answer
    x = 6,007.11

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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.