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Finding the Fourth Proportional to 7,249.28, 10,000 and 4,894.72

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Solution

The fourth proportional to 7,249.28, 10,000 and 4,894.72 is: 6,752.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,249.28 : 10,000 = 4,894.72 : x
  2. Step 2: Convert to fraction form
    7,249.28/10,000 = 4,894.72/x
  3. Step 3: Cross multiply
    7,249.28x = 10,000 × 4,894.72
  4. Step 4: Simplify right side
    7,249.28x = 48,947,200
  5. Step 5: Solve for x
    x = 48,947,200/7,249.28
  6. Step 6: Final answer
    x = 6,752.01

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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.