Home / 3,611.58-5,417.78-1,420.02

Finding the Fourth Proportional to 3,611.58, 5,417.78 and 1,420.02

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Solution

The fourth proportional to 3,611.58, 5,417.78 and 1,420.02 is: 2,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.58 : 5,417.78 = 1,420.02 : x
  2. Step 2: Convert to fraction form
    3,611.58/5,417.78 = 1,420.02/x
  3. Step 3: Cross multiply
    3,611.58x = 5,417.78 × 1,420.02
  4. Step 4: Simplify right side
    3,611.58x = 7,693,355.96
  5. Step 5: Solve for x
    x = 7,693,355.96/3,611.58
  6. Step 6: Final answer
    x = 2,130.19

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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.