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Finding the Fourth Proportional to 3,551.77, 5,328.75 and 1,472.75

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Solution

The fourth proportional to 3,551.77, 5,328.75 and 1,472.75 is: 2,209.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,551.77 : 5,328.75 = 1,472.75 : x
  2. Step 2: Convert to fraction form
    3,551.77/5,328.75 = 1,472.75/x
  3. Step 3: Cross multiply
    3,551.77x = 5,328.75 × 1,472.75
  4. Step 4: Simplify right side
    3,551.77x = 7,847,915.42
  5. Step 5: Solve for x
    x = 7,847,915.42/3,551.77
  6. Step 6: Final answer
    x = 2,209.58

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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.