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Finding the Fourth Proportional to 2,176.39, 3,264.59 and 637.39

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Solution

The fourth proportional to 2,176.39, 3,264.59 and 637.39 is: 956.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.39 : 3,264.59 = 637.39 : x
  2. Step 2: Convert to fraction form
    2,176.39/3,264.59 = 637.39/x
  3. Step 3: Cross multiply
    2,176.39x = 3,264.59 × 637.39
  4. Step 4: Simplify right side
    2,176.39x = 2,080,813.83
  5. Step 5: Solve for x
    x = 2,080,813.83/2,176.39
  6. Step 6: Final answer
    x = 956.09

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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.