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Finding the Fourth Proportional to 8,310.55, 12,459.27 and 4,148.42

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Solution

The fourth proportional to 8,310.55, 12,459.27 and 4,148.42 is: 6,219.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,310.55 : 12,459.27 = 4,148.42 : x
  2. Step 2: Convert to fraction form
    8,310.55/12,459.27 = 4,148.42/x
  3. Step 3: Cross multiply
    8,310.55x = 12,459.27 × 4,148.42
  4. Step 4: Simplify right side
    8,310.55x = 51,686,214.78
  5. Step 5: Solve for x
    x = 51,686,214.78/8,310.55
  6. Step 6: Final answer
    x = 6,219.35

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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.