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Finding the Fourth Proportional to 2,700.16, 4,050.24 and 851.20

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Solution

The fourth proportional to 2,700.16, 4,050.24 and 851.20 is: 1,276.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,700.16 : 4,050.24 = 851.20 : x
  2. Step 2: Convert to fraction form
    2,700.16/4,050.24 = 851.20/x
  3. Step 3: Cross multiply
    2,700.16x = 4,050.24 × 851.20
  4. Step 4: Simplify right side
    2,700.16x = 3,447,564.29
  5. Step 5: Solve for x
    x = 3,447,564.29/2,700.16
  6. Step 6: Final answer
    x = 1,276.80

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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.