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Finding the Fourth Proportional to 3,153.51, 4,725.06 and 1,917.18

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Solution

The fourth proportional to 3,153.51, 4,725.06 and 1,917.18 is: 2,872.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153.51 : 4,725.06 = 1,917.18 : x
  2. Step 2: Convert to fraction form
    3,153.51/4,725.06 = 1,917.18/x
  3. Step 3: Cross multiply
    3,153.51x = 4,725.06 × 1,917.18
  4. Step 4: Simplify right side
    3,153.51x = 9,058,790.53
  5. Step 5: Solve for x
    x = 9,058,790.53/3,153.51
  6. Step 6: Final answer
    x = 2,872.61

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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.