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Finding the Fourth Proportional to 2,789.64, 4,152.87 and 2,750.76

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Solution

The fourth proportional to 2,789.64, 4,152.87 and 2,750.76 is: 4,094.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.64 : 4,152.87 = 2,750.76 : x
  2. Step 2: Convert to fraction form
    2,789.64/4,152.87 = 2,750.76/x
  3. Step 3: Cross multiply
    2,789.64x = 4,152.87 × 2,750.76
  4. Step 4: Simplify right side
    2,789.64x = 11,423,548.68
  5. Step 5: Solve for x
    x = 11,423,548.68/2,789.64
  6. Step 6: Final answer
    x = 4,094.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.