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Finding the Fourth Proportional to 2,740.18, 4,109.77 and 891.04

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Solution

The fourth proportional to 2,740.18, 4,109.77 and 891.04 is: 1,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.18 : 4,109.77 = 891.04 : x
  2. Step 2: Convert to fraction form
    2,740.18/4,109.77 = 891.04/x
  3. Step 3: Cross multiply
    2,740.18x = 4,109.77 × 891.04
  4. Step 4: Simplify right side
    2,740.18x = 3,661,960.30
  5. Step 5: Solve for x
    x = 3,661,960.30/2,740.18
  6. Step 6: Final answer
    x = 1,336.40

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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.