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Finding the Fourth Proportional to 5,905.70, 8,858.55 and 5,103.80

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Solution

The fourth proportional to 5,905.70, 8,858.55 and 5,103.80 is: 7,655.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,905.70 : 8,858.55 = 5,103.80 : x
  2. Step 2: Convert to fraction form
    5,905.70/8,858.55 = 5,103.80/x
  3. Step 3: Cross multiply
    5,905.70x = 8,858.55 × 5,103.80
  4. Step 4: Simplify right side
    5,905.70x = 45,212,267.49
  5. Step 5: Solve for x
    x = 45,212,267.49/5,905.70
  6. Step 6: Final answer
    x = 7,655.70

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.