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Finding the Fourth Proportional to 7,405.70, 10,219.86 and 4,261.88

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Solution

The fourth proportional to 7,405.70, 10,219.86 and 4,261.88 is: 5,881.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.70 : 10,219.86 = 4,261.88 : x
  2. Step 2: Convert to fraction form
    7,405.70/10,219.86 = 4,261.88/x
  3. Step 3: Cross multiply
    7,405.70x = 10,219.86 × 4,261.88
  4. Step 4: Simplify right side
    7,405.70x = 43,555,765.84
  5. Step 5: Solve for x
    x = 43,555,765.84/7,405.70
  6. Step 6: Final answer
    x = 5,881.39

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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.