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Finding the Fourth Proportional to 7,726.84, 10,663.05 and 4,190.05

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Solution

The fourth proportional to 7,726.84, 10,663.05 and 4,190.05 is: 5,782.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,726.84 : 10,663.05 = 4,190.05 : x
  2. Step 2: Convert to fraction form
    7,726.84/10,663.05 = 4,190.05/x
  3. Step 3: Cross multiply
    7,726.84x = 10,663.05 × 4,190.05
  4. Step 4: Simplify right side
    7,726.84x = 44,678,712.65
  5. Step 5: Solve for x
    x = 44,678,712.65/7,726.84
  6. Step 6: Final answer
    x = 5,782.27

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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.