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Finding the Fourth Proportional to 2,370.70, 3,556.04 and 639.32

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Solution

The fourth proportional to 2,370.70, 3,556.04 and 639.32 is: 958.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,370.70 : 3,556.04 = 639.32 : x
  2. Step 2: Convert to fraction form
    2,370.70/3,556.04 = 639.32/x
  3. Step 3: Cross multiply
    2,370.70x = 3,556.04 × 639.32
  4. Step 4: Simplify right side
    2,370.70x = 2,273,447.49
  5. Step 5: Solve for x
    x = 2,273,447.49/2,370.70
  6. Step 6: Final answer
    x = 958.98

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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.