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Finding the Fourth Proportional to 2,841.32, 4,262.13 and 761.64

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Solution

The fourth proportional to 2,841.32, 4,262.13 and 761.64 is: 1,142.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,841.32 : 4,262.13 = 761.64 : x
  2. Step 2: Convert to fraction form
    2,841.32/4,262.13 = 761.64/x
  3. Step 3: Cross multiply
    2,841.32x = 4,262.13 × 761.64
  4. Step 4: Simplify right side
    2,841.32x = 3,246,208.69
  5. Step 5: Solve for x
    x = 3,246,208.69/2,841.32
  6. Step 6: Final answer
    x = 1,142.50

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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.