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Finding the Fourth Proportional to 3,601.58, 5,400.20 and 1,407.69

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Solution

The fourth proportional to 3,601.58, 5,400.20 and 1,407.69 is: 2,110.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,601.58 : 5,400.20 = 1,407.69 : x
  2. Step 2: Convert to fraction form
    3,601.58/5,400.20 = 1,407.69/x
  3. Step 3: Cross multiply
    3,601.58x = 5,400.20 × 1,407.69
  4. Step 4: Simplify right side
    3,601.58x = 7,601,811.06
  5. Step 5: Solve for x
    x = 7,601,811.06/3,601.58
  6. Step 6: Final answer
    x = 2,110.69

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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.