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Finding the Fourth Proportional to 2,540.76, 3,811.88 and 897.40

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Solution

The fourth proportional to 2,540.76, 3,811.88 and 897.40 is: 1,346.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,540.76 : 3,811.88 = 897.40 : x
  2. Step 2: Convert to fraction form
    2,540.76/3,811.88 = 897.40/x
  3. Step 3: Cross multiply
    2,540.76x = 3,811.88 × 897.40
  4. Step 4: Simplify right side
    2,540.76x = 3,420,781.11
  5. Step 5: Solve for x
    x = 3,420,781.11/2,540.76
  6. Step 6: Final answer
    x = 1,346.36

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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.