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Finding the Fourth Proportional to 2,634.03, 3,951.09 and 686.07

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Solution

The fourth proportional to 2,634.03, 3,951.09 and 686.07 is: 1,029.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,634.03 : 3,951.09 = 686.07 : x
  2. Step 2: Convert to fraction form
    2,634.03/3,951.09 = 686.07/x
  3. Step 3: Cross multiply
    2,634.03x = 3,951.09 × 686.07
  4. Step 4: Simplify right side
    2,634.03x = 2,710,724.32
  5. Step 5: Solve for x
    x = 2,710,724.32/2,634.03
  6. Step 6: Final answer
    x = 1,029.12

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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.