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Finding the Fourth Proportional to 2,652.88, 3,979.91 and 897.78

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Solution

The fourth proportional to 2,652.88, 3,979.91 and 897.78 is: 1,346.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,652.88 : 3,979.91 = 897.78 : x
  2. Step 2: Convert to fraction form
    2,652.88/3,979.91 = 897.78/x
  3. Step 3: Cross multiply
    2,652.88x = 3,979.91 × 897.78
  4. Step 4: Simplify right side
    2,652.88x = 3,573,088.49
  5. Step 5: Solve for x
    x = 3,573,088.49/2,652.88
  6. Step 6: Final answer
    x = 1,346.87

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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.