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Finding the Fourth Proportional to 3,551.74, 5,328.72 and 1,472.72

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Solution

The fourth proportional to 3,551.74, 5,328.72 and 1,472.72 is: 2,209.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,551.74 : 5,328.72 = 1,472.72 : x
  2. Step 2: Convert to fraction form
    3,551.74/5,328.72 = 1,472.72/x
  3. Step 3: Cross multiply
    3,551.74x = 5,328.72 × 1,472.72
  4. Step 4: Simplify right side
    3,551.74x = 7,847,725.84
  5. Step 5: Solve for x
    x = 7,847,725.84/3,551.74
  6. Step 6: Final answer
    x = 2,209.55

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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.