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Finding the Fourth Proportional to 1,955.04, 2,695 and 1,605.12

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Solution

The fourth proportional to 1,955.04, 2,695 and 1,605.12 is: 2,212.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.04 : 2,695 = 1,605.12 : x
  2. Step 2: Convert to fraction form
    1,955.04/2,695 = 1,605.12/x
  3. Step 3: Cross multiply
    1,955.04x = 2,695 × 1,605.12
  4. Step 4: Simplify right side
    1,955.04x = 4,325,798.40
  5. Step 5: Solve for x
    x = 4,325,798.40/1,955.04
  6. Step 6: Final answer
    x = 2,212.64

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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.