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Finding the Fourth Proportional to 8,140.95, 12,215.69 and 4,442.49

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Solution

The fourth proportional to 8,140.95, 12,215.69 and 4,442.49 is: 6,666.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.95 : 12,215.69 = 4,442.49 : x
  2. Step 2: Convert to fraction form
    8,140.95/12,215.69 = 4,442.49/x
  3. Step 3: Cross multiply
    8,140.95x = 12,215.69 × 4,442.49
  4. Step 4: Simplify right side
    8,140.95x = 54,268,080.67
  5. Step 5: Solve for x
    x = 54,268,080.67/8,140.95
  6. Step 6: Final answer
    x = 6,666.06

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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.