Home / 5,611.36-7,742.88-3,127.36

Finding the Fourth Proportional to 5,611.36, 7,742.88 and 3,127.36

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Solution

The fourth proportional to 5,611.36, 7,742.88 and 3,127.36 is: 4,315.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.36 : 7,742.88 = 3,127.36 : x
  2. Step 2: Convert to fraction form
    5,611.36/7,742.88 = 3,127.36/x
  3. Step 3: Cross multiply
    5,611.36x = 7,742.88 × 3,127.36
  4. Step 4: Simplify right side
    5,611.36x = 24,214,773.20
  5. Step 5: Solve for x
    x = 24,214,773.20/5,611.36
  6. Step 6: Final answer
    x = 4,315.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.