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Finding the Fourth Proportional to 2,370.96, 3,556.53 and 639.59

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Solution

The fourth proportional to 2,370.96, 3,556.53 and 639.59 is: 959.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,370.96 : 3,556.53 = 639.59 : x
  2. Step 2: Convert to fraction form
    2,370.96/3,556.53 = 639.59/x
  3. Step 3: Cross multiply
    2,370.96x = 3,556.53 × 639.59
  4. Step 4: Simplify right side
    2,370.96x = 2,274,703.24
  5. Step 5: Solve for x
    x = 2,274,703.24/2,370.96
  6. Step 6: Final answer
    x = 959.40

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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.