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Finding the Fourth Proportional to 2,657.63, 3,986.44 and 926.25

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Solution

The fourth proportional to 2,657.63, 3,986.44 and 926.25 is: 1,389.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.63 : 3,986.44 = 926.25 : x
  2. Step 2: Convert to fraction form
    2,657.63/3,986.44 = 926.25/x
  3. Step 3: Cross multiply
    2,657.63x = 3,986.44 × 926.25
  4. Step 4: Simplify right side
    2,657.63x = 3,692,440.05
  5. Step 5: Solve for x
    x = 3,692,440.05/2,657.63
  6. Step 6: Final answer
    x = 1,389.37

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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.