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Finding the Fourth Proportional to 5,611.99, 7,741.34 and 3,512.47

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Solution

The fourth proportional to 5,611.99, 7,741.34 and 3,512.47 is: 4,845.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.99 : 7,741.34 = 3,512.47 : x
  2. Step 2: Convert to fraction form
    5,611.99/7,741.34 = 3,512.47/x
  3. Step 3: Cross multiply
    5,611.99x = 7,741.34 × 3,512.47
  4. Step 4: Simplify right side
    5,611.99x = 27,191,206.95
  5. Step 5: Solve for x
    x = 27,191,206.95/5,611.99
  6. Step 6: Final answer
    x = 4,845.20

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Double scale
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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.