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Finding the Fourth Proportional to 7,751.49, 10,553.94 and 7,726.88

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Solution

The fourth proportional to 7,751.49, 10,553.94 and 7,726.88 is: 10,520.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.49 : 10,553.94 = 7,726.88 : x
  2. Step 2: Convert to fraction form
    7,751.49/10,553.94 = 7,726.88/x
  3. Step 3: Cross multiply
    7,751.49x = 10,553.94 × 7,726.88
  4. Step 4: Simplify right side
    7,751.49x = 81,549,027.91
  5. Step 5: Solve for x
    x = 81,549,027.91/7,751.49
  6. Step 6: Final answer
    x = 10,520.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.