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Finding the Fourth Proportional to 8,953.67, 13,430.84 and 3,405.98

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Solution

The fourth proportional to 8,953.67, 13,430.84 and 3,405.98 is: 5,109.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,953.67 : 13,430.84 = 3,405.98 : x
  2. Step 2: Convert to fraction form
    8,953.67/13,430.84 = 3,405.98/x
  3. Step 3: Cross multiply
    8,953.67x = 13,430.84 × 3,405.98
  4. Step 4: Simplify right side
    8,953.67x = 45,745,172.42
  5. Step 5: Solve for x
    x = 45,745,172.42/8,953.67
  6. Step 6: Final answer
    x = 5,109.10

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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.