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Finding the Fourth Proportional to 9,920.75, 14,881.21 and 2,525.21

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Solution

The fourth proportional to 9,920.75, 14,881.21 and 2,525.21 is: 3,787.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,920.75 : 14,881.21 = 2,525.21 : x
  2. Step 2: Convert to fraction form
    9,920.75/14,881.21 = 2,525.21/x
  3. Step 3: Cross multiply
    9,920.75x = 14,881.21 × 2,525.21
  4. Step 4: Simplify right side
    9,920.75x = 37,578,167.68
  5. Step 5: Solve for x
    x = 37,578,167.68/9,920.75
  6. Step 6: Final answer
    x = 3,787.84

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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.