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Finding the Fourth Proportional to 5,451.77, 7,525.70 and 3,685.77

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Solution

The fourth proportional to 5,451.77, 7,525.70 and 3,685.77 is: 5,087.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.77 : 7,525.70 = 3,685.77 : x
  2. Step 2: Convert to fraction form
    5,451.77/7,525.70 = 3,685.77/x
  3. Step 3: Cross multiply
    5,451.77x = 7,525.70 × 3,685.77
  4. Step 4: Simplify right side
    5,451.77x = 27,737,999.29
  5. Step 5: Solve for x
    x = 27,737,999.29/5,451.77
  6. Step 6: Final answer
    x = 5,087.89

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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.