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Finding the Fourth Proportional to 2,700.40, 3,726.77 and 1,505.77

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Solution

The fourth proportional to 2,700.40, 3,726.77 and 1,505.77 is: 2,078.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,700.40 : 3,726.77 = 1,505.77 : x
  2. Step 2: Convert to fraction form
    2,700.40/3,726.77 = 1,505.77/x
  3. Step 3: Cross multiply
    2,700.40x = 3,726.77 × 1,505.77
  4. Step 4: Simplify right side
    2,700.40x = 5,611,662.58
  5. Step 5: Solve for x
    x = 5,611,662.58/2,700.40
  6. Step 6: Final answer
    x = 2,078.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.