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Finding the Fourth Proportional to 8,908.40, 13,362.60 and 7,266.80

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Solution

The fourth proportional to 8,908.40, 13,362.60 and 7,266.80 is: 10,900.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,908.40 : 13,362.60 = 7,266.80 : x
  2. Step 2: Convert to fraction form
    8,908.40/13,362.60 = 7,266.80/x
  3. Step 3: Cross multiply
    8,908.40x = 13,362.60 × 7,266.80
  4. Step 4: Simplify right side
    8,908.40x = 97,103,341.68
  5. Step 5: Solve for x
    x = 97,103,341.68/8,908.40
  6. Step 6: Final answer
    x = 10,900.20

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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.