Home / 3,611.44-5,417.16-1,420.39

Finding the Fourth Proportional to 3,611.44, 5,417.16 and 1,420.39

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Solution

The fourth proportional to 3,611.44, 5,417.16 and 1,420.39 is: 2,130.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.44 : 5,417.16 = 1,420.39 : x
  2. Step 2: Convert to fraction form
    3,611.44/5,417.16 = 1,420.39/x
  3. Step 3: Cross multiply
    3,611.44x = 5,417.16 × 1,420.39
  4. Step 4: Simplify right side
    3,611.44x = 7,694,479.89
  5. Step 5: Solve for x
    x = 7,694,479.89/3,611.44
  6. Step 6: Final answer
    x = 2,130.59

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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.