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Finding the Fourth Proportional to 7,894.68, 10,887.48 and 4,909.56

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Solution

The fourth proportional to 7,894.68, 10,887.48 and 4,909.56 is: 6,770.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,894.68 : 10,887.48 = 4,909.56 : x
  2. Step 2: Convert to fraction form
    7,894.68/10,887.48 = 4,909.56/x
  3. Step 3: Cross multiply
    7,894.68x = 10,887.48 × 4,909.56
  4. Step 4: Simplify right side
    7,894.68x = 53,452,736.31
  5. Step 5: Solve for x
    x = 53,452,736.31/7,894.68
  6. Step 6: Final answer
    x = 6,770.73

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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.