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Finding the Fourth Proportional to 3,008.26, 4,512.40 and 787.09

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Solution

The fourth proportional to 3,008.26, 4,512.40 and 787.09 is: 1,180.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,008.26 : 4,512.40 = 787.09 : x
  2. Step 2: Convert to fraction form
    3,008.26/4,512.40 = 787.09/x
  3. Step 3: Cross multiply
    3,008.26x = 4,512.40 × 787.09
  4. Step 4: Simplify right side
    3,008.26x = 3,551,671.71
  5. Step 5: Solve for x
    x = 3,551,671.71/3,008.26
  6. Step 6: Final answer
    x = 1,180.64

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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.