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Finding the Fourth Proportional to 8,847.70, 13,271.55 and 7,438.30

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Solution

The fourth proportional to 8,847.70, 13,271.55 and 7,438.30 is: 11,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,847.70 : 13,271.55 = 7,438.30 : x
  2. Step 2: Convert to fraction form
    8,847.70/13,271.55 = 7,438.30/x
  3. Step 3: Cross multiply
    8,847.70x = 13,271.55 × 7,438.30
  4. Step 4: Simplify right side
    8,847.70x = 98,717,770.37
  5. Step 5: Solve for x
    x = 98,717,770.37/8,847.70
  6. Step 6: Final answer
    x = 11,157.45

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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.