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Finding the Fourth Proportional to 8,888.40, 12,266.64 and 5,353.56

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Solution

The fourth proportional to 8,888.40, 12,266.64 and 5,353.56 is: 7,388.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,888.40 : 12,266.64 = 5,353.56 : x
  2. Step 2: Convert to fraction form
    8,888.40/12,266.64 = 5,353.56/x
  3. Step 3: Cross multiply
    8,888.40x = 12,266.64 × 5,353.56
  4. Step 4: Simplify right side
    8,888.40x = 65,670,193.24
  5. Step 5: Solve for x
    x = 65,670,193.24/8,888.40
  6. Step 6: Final answer
    x = 7,388.30

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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.