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Finding the Fourth Proportional to 7,235.47, 9,981.78 and 4,249.96

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Solution

The fourth proportional to 7,235.47, 9,981.78 and 4,249.96 is: 5,863.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,235.47 : 9,981.78 = 4,249.96 : x
  2. Step 2: Convert to fraction form
    7,235.47/9,981.78 = 4,249.96/x
  3. Step 3: Cross multiply
    7,235.47x = 9,981.78 × 4,249.96
  4. Step 4: Simplify right side
    7,235.47x = 42,422,140.77
  5. Step 5: Solve for x
    x = 42,422,140.77/7,235.47
  6. Step 6: Final answer
    x = 5,863.08

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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.