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Finding the Fourth Proportional to 7,442.64, 11,162.90 and 2,511.63

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Solution

The fourth proportional to 7,442.64, 11,162.90 and 2,511.63 is: 3,767.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,442.64 : 11,162.90 = 2,511.63 : x
  2. Step 2: Convert to fraction form
    7,442.64/11,162.90 = 2,511.63/x
  3. Step 3: Cross multiply
    7,442.64x = 11,162.90 × 2,511.63
  4. Step 4: Simplify right side
    7,442.64x = 28,037,080.81
  5. Step 5: Solve for x
    x = 28,037,080.81/7,442.64
  6. Step 6: Final answer
    x = 3,767.09

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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.