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Finding the Fourth Proportional to 1,800.11, 2,700.53 and 760.11

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Solution

The fourth proportional to 1,800.11, 2,700.53 and 760.11 is: 1,140.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,800.11 : 2,700.53 = 760.11 : x
  2. Step 2: Convert to fraction form
    1,800.11/2,700.53 = 760.11/x
  3. Step 3: Cross multiply
    1,800.11x = 2,700.53 × 760.11
  4. Step 4: Simplify right side
    1,800.11x = 2,052,696.06
  5. Step 5: Solve for x
    x = 2,052,696.06/1,800.11
  6. Step 6: Final answer
    x = 1,140.32

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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.