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Finding the Fourth Proportional to 2,657.35, 3,986.04 and 925.97

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Solution

The fourth proportional to 2,657.35, 3,986.04 and 925.97 is: 1,388.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.35 : 3,986.04 = 925.97 : x
  2. Step 2: Convert to fraction form
    2,657.35/3,986.04 = 925.97/x
  3. Step 3: Cross multiply
    2,657.35x = 3,986.04 × 925.97
  4. Step 4: Simplify right side
    2,657.35x = 3,690,953.46
  5. Step 5: Solve for x
    x = 3,690,953.46/2,657.35
  6. Step 6: Final answer
    x = 1,388.96

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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.