Home / 3,720.42-5,582.97-1,380.18

Finding the Fourth Proportional to 3,720.42, 5,582.97 and 1,380.18

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Solution

The fourth proportional to 3,720.42, 5,582.97 and 1,380.18 is: 2,071.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.42 : 5,582.97 = 1,380.18 : x
  2. Step 2: Convert to fraction form
    3,720.42/5,582.97 = 1,380.18/x
  3. Step 3: Cross multiply
    3,720.42x = 5,582.97 × 1,380.18
  4. Step 4: Simplify right side
    3,720.42x = 7,705,503.53
  5. Step 5: Solve for x
    x = 7,705,503.53/3,720.42
  6. Step 6: Final answer
    x = 2,071.14

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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.