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Finding the Fourth Proportional to 5,611.40, 7,751.06 and 4,553.12

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Solution

The fourth proportional to 5,611.40, 7,751.06 and 4,553.12 is: 6,289.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.40 : 7,751.06 = 4,553.12 : x
  2. Step 2: Convert to fraction form
    5,611.40/7,751.06 = 4,553.12/x
  3. Step 3: Cross multiply
    5,611.40x = 7,751.06 × 4,553.12
  4. Step 4: Simplify right side
    5,611.40x = 35,291,506.31
  5. Step 5: Solve for x
    x = 35,291,506.31/5,611.40
  6. Step 6: Final answer
    x = 6,289.25

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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.