Home / 3,611.62-5,416.46-1,420.36

Finding the Fourth Proportional to 3,611.62, 5,416.46 and 1,420.36

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Solution

The fourth proportional to 3,611.62, 5,416.46 and 1,420.36 is: 2,130.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.62 : 5,416.46 = 1,420.36 : x
  2. Step 2: Convert to fraction form
    3,611.62/5,416.46 = 1,420.36/x
  3. Step 3: Cross multiply
    3,611.62x = 5,416.46 × 1,420.36
  4. Step 4: Simplify right side
    3,611.62x = 7,693,323.13
  5. Step 5: Solve for x
    x = 7,693,323.13/3,611.62
  6. Step 6: Final answer
    x = 2,130.16

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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.