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Finding the Fourth Proportional to 7,181.05, 9,907.12 and 4,454.32

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Solution

The fourth proportional to 7,181.05, 9,907.12 and 4,454.32 is: 6,145.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.05 : 9,907.12 = 4,454.32 : x
  2. Step 2: Convert to fraction form
    7,181.05/9,907.12 = 4,454.32/x
  3. Step 3: Cross multiply
    7,181.05x = 9,907.12 × 4,454.32
  4. Step 4: Simplify right side
    7,181.05x = 44,129,483.25
  5. Step 5: Solve for x
    x = 44,129,483.25/7,181.05
  6. Step 6: Final answer
    x = 6,145.27

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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.