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Finding the Fourth Proportional to 1,761.08, 2,639.10 and 894.20

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Solution

The fourth proportional to 1,761.08, 2,639.10 and 894.20 is: 1,340.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761.08 : 2,639.10 = 894.20 : x
  2. Step 2: Convert to fraction form
    1,761.08/2,639.10 = 894.20/x
  3. Step 3: Cross multiply
    1,761.08x = 2,639.10 × 894.20
  4. Step 4: Simplify right side
    1,761.08x = 2,359,883.22
  5. Step 5: Solve for x
    x = 2,359,883.22/1,761.08
  6. Step 6: Final answer
    x = 1,340.02

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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.