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Finding the Fourth Proportional to 3,480.42, 5,220.63 and 1,725.06

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Solution

The fourth proportional to 3,480.42, 5,220.63 and 1,725.06 is: 2,587.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.42 : 5,220.63 = 1,725.06 : x
  2. Step 2: Convert to fraction form
    3,480.42/5,220.63 = 1,725.06/x
  3. Step 3: Cross multiply
    3,480.42x = 5,220.63 × 1,725.06
  4. Step 4: Simplify right side
    3,480.42x = 9,005,899.99
  5. Step 5: Solve for x
    x = 9,005,899.99/3,480.42
  6. Step 6: Final answer
    x = 2,587.59

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Similar ratio
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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.