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Finding the Fourth Proportional to 3,705.50, 5,555.65 and 1,728.99

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Solution

The fourth proportional to 3,705.50, 5,555.65 and 1,728.99 is: 2,592.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,705.50 : 5,555.65 = 1,728.99 : x
  2. Step 2: Convert to fraction form
    3,705.50/5,555.65 = 1,728.99/x
  3. Step 3: Cross multiply
    3,705.50x = 5,555.65 × 1,728.99
  4. Step 4: Simplify right side
    3,705.50x = 9,605,663.29
  5. Step 5: Solve for x
    x = 9,605,663.29/3,705.50
  6. Step 6: Final answer
    x = 2,592.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.