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Finding the Fourth Proportional to 1,705.64, 2,556.86 and 1,553.47

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Solution

The fourth proportional to 1,705.64, 2,556.86 and 1,553.47 is: 2,328.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.64 : 2,556.86 = 1,553.47 : x
  2. Step 2: Convert to fraction form
    1,705.64/2,556.86 = 1,553.47/x
  3. Step 3: Cross multiply
    1,705.64x = 2,556.86 × 1,553.47
  4. Step 4: Simplify right side
    1,705.64x = 3,971,991.14
  5. Step 5: Solve for x
    x = 3,971,991.14/1,705.64
  6. Step 6: Final answer
    x = 2,328.75

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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.