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Finding the Fourth Proportional to 2,276.68, 3,415.86 and 890.68

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Solution

The fourth proportional to 2,276.68, 3,415.86 and 890.68 is: 1,336.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,276.68 : 3,415.86 = 890.68 : x
  2. Step 2: Convert to fraction form
    2,276.68/3,415.86 = 890.68/x
  3. Step 3: Cross multiply
    2,276.68x = 3,415.86 × 890.68
  4. Step 4: Simplify right side
    2,276.68x = 3,042,438.18
  5. Step 5: Solve for x
    x = 3,042,438.18/2,276.68
  6. Step 6: Final answer
    x = 1,336.35

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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.